Celebrity Best Friends(01 of33)
Open Image ModalNaomi Campbell and Kate MossThe two supermodels may represented different model eras, but their friendship - like their looks - has withstood the test of time - they've known each other since they were teens. Naomi has said: "I'm so lucky to have friends like Kate, who are there for me whatever. Even if we're not on the same continent, we support each other. That's what best friends do." (credit:Getty)
Celebrity Best Friends(02 of33)
Open Image ModalAgyness Deyn and Henry HollandThe fashionable duo have been pals for 15 years, having met in a chippie - where Agy worked - in Lancashire aged 13. They moved to London together and even lived together for a few years before they became famous. (credit:GF/bauergriffinonline.com)
Celebrity Best Friends(03 of33)
Open Image ModalBrad Pitt and George ClooneyOne of the best-looking friendships in Hollywood, the two stars have rubbed elbows on-screen in the Oceans franchise, hung out at Clooney's home in Como, started a Darfur charity together and even motorcycled side by side. They're also the kind of buddies who like to play around: in an interview, Brad joked that he and Angelina Jolie wouldn't marry until "George can legally marry [a man.]" (credit:AP)
Celebrity Best Friends(04 of33)
Open Image ModalStella McCartney, Kate Hudson and Liv TylerKate and Liv became friends when they met at Crossroads School in Santa Monica in the 1990s, and we imagine they had loads to talk about (like famous parents and rocker crushes). Liv and Stella have the rock royalty dads in common, and when Liv introduced Stella to Kate the pair hit it off as well, and Kate is frequently spotted in McCartney's designs. (credit:Getty Images)
Celebrity Best Friends(05 of33)
Open Image ModalDaisy Lowe and Alexa ChungThese bright young fashion plates make an attractive pair, whether they're out on the town together or sitting front row at London Fashion Week. (credit:WireImage)
Celebrity Best Friends(06 of33)
Open Image ModalGwyneth Paltrow and MadonnaGwyneth once referred to BFF Madonna as like "an older sister," but their friendship cooled in 2010, after Madonna's divorce to Guy Ritchie. Some suggest the reason for the "breakup" is that they had less in common afterwards, while other sources speculate it had to do with a falling out involving trainer Tracy Anderson. (credit:Getty)
Celebrity Best Friends(07 of33)
Open Image ModalElizabeth Hurley and Elton John These two celebrity BFFs are so tight, Elton gave Liz away at her 2007 wedding to Arun Nayar. (credit:Getty)
Celebrity Best Friends(08 of33)
Open Image ModalNicole Richie and Paris HiltonThe two BFFS-since-the-age-of-two let the world in on their friendship when they starred in The Simple Life together, but hit a rocky patch in 2005. They've since reconciled but Paris didn't make the final guest list for Nicole's wedding to Joel Madden in 2010. (credit:WireImage)
Celebrity Best Friends(09 of33)
Open Image ModalRihanna and Katy PerryThe two musical divas have relied on each other through good times (RiRi threw Katy a Vegas hen do in 2010) and bad (she was also the shoulder to cry on when Katy divorced from Russell Brand 14 months later). RiRi told Access Hollywood: "Whenever we're in the same city, we try to do something -- whether it's seeing each other for five minutes for a hug [or] whether it's partying all night at some random after party for an award show. We try to hang out as much as we can, which is very rarely because we're so busy." (credit:Getty)
Celebrity Best Friends(10 of33)
Open Image ModalEva Longoria, Victoria Beckham and Kate BeckinsaleSince VB moved to L.A., she's become one-third of a trio of famous brunette pals which includes Eva Longoria and Kate Beckinsale. Kate calls Eva: "...A fantastic girl's girl. If your car broke down at 4 in the morning, she's the friend who would come to your rescue." And she's already setting up her daughter Lily with one of Victoria's sons: "...If she did have to have a boyfriend, then I suppose Brooklyn would get my seal of approval." The three are often seen partying together in L.A. (credit:Getty)
Celebrity Best Friends(11 of33)
Open Image ModalDominic Cooper and James CordenThe History Boys co-stars - who have been pals since starring in the play together in 2004 - are often seen together on the town, usually laughing. Cooper reportedly bought a house on the same London block as Corden's, lived with him for a while and introduced Corden to his fiancée, Julia Carey. (credit:Getty)
Celebrity Best Friends(12 of33)
Open Image ModalJaime Winstone and Lily AllenThese two celebrity girlfriends know what it's like to grow up with a famous dad - and then get famous themselves. They also have Lily's brother, Alfie, in common - Jaime dated him for three years until they broke up in 2010. (credit:PA)
Celebrity Best Friends(13 of33)
Open Image ModalSienna Miller and Keira KnightleyThe Edge of Love co-stars really bonded after filming together (sharing a bath can do that for you), and the two can really on each other through thick and thin - they've been each other's shoulders to cry on after bad breakups and also single-girl wingmen for a night on the town. (credit:: Zac Hussein)
Celebrity Best Friends(14 of33)
Open Image ModalNaomi Watts and Nicole KidmanThe two Aussie gals have been pals since their teenage days trying to land their big breaks in Australia, and have bonded over motherhood as well as their profession and homeland. Kidman told the Telegraph: "Naomi Watts and I are very, very good friends and have maintained that through so many things. I think that's really rare, particularly for actresses, and I take a lot of pride in that." (credit:PA)
Celebrity Best Friends(15 of33)
Open Image ModalSean "Diddy" Combs and Ashton KutcherCombs and Kutcher hit it off when they were both filming TV series for MTV, and their friendship has graduated from the early days of clubbing to helping charity and giving business advice. In an article for Time magazine, Combs called Kutcher his "sounding board," and added: "Most of us want to make as much money as we can, but Ashton is out to make the world a better place." (credit:PA)
Celebrity Best Friends(16 of33)
Open Image ModalAshley Tisdale and Vanessa HudgensThe High School Musical gal pals have a strong friendship in real life, and they've been snapped doing everything together, including grocery shopping, working out and getting inked. (credit:EMPICS)
Celebrity Best Friends(17 of33)
Open Image ModalJennifer Aniston and Courteney CoxThe two actresses have been BFFs since their on-screen roles as besties Rachel Green and Monica Gellar on Friends (they actually became buddies at the audition for the show in 1994). Recent reports in March 2012 suggest that the friendship has been under "strain" since Aniston has gotten cosy with Justin Theroux, but these two have proved their friendship can withstand the test of time and romantic heartbreak. (credit:AP)
Celebrity Best Friends(18 of33)
Open Image ModalBen Affleck and Matt DamonThese two best buds were neighbours living two blocks away from each other in Cambridge, Massachusettts, and met when Damon was 10 and Affleck was eight. They've since won the Oscar for Best Original Screenplay for co-writing Good Will Hunting and discovered that their friendship is indeed thicker than water: according to the New England Genealogical Society, the actors are 10th cousins, once removed. (credit:PA)
Celebrity Best Friends(19 of33)
Open Image ModalWill Smith and Tom CruiseThe famous fathers have a serious off-screen bromance that involves attending each other's premieres and hanging out with one another's families. Smith has defended Tom's views on Scientology, while Tom has praised his pal by saying: "We share that same level of reality and commitment that we have to our craft and our family. It's fun. Wherever Will Smith is, that's where the party is!" (credit:PA)
Celebrity Best Friends(20 of33)
Open Image ModalKate Winslet and Rachel Weisz These English roses have more in common than their choice of profession and motherhood: a love of natural beauty. Along with Emma Thompson, in 2011 they formed the "British Anti-Cosmetic Surgery League," and have spoken out about embracing the ageing process and not Hollywood's frozen, Botoxed look. (credit:PA)
Celebrity Best Friends(21 of33)
Open Image ModalJessica Biel and Jennifer GarnerThe two stars bonded on the set of ensemble film Valentine's Day, and the gal pals have only the kindest words to say about one another. Biel gushed to Marie Claire that she was "in awe" of Jen, while Garner told Vogue that Jessica is "incredibly girly and warm and open." (credit:Getty)
Celebrity Best Friends(22 of33)
Open Image ModalKristen Stewart and Dakota FanningThe two actresses have had plenty of on - and off-screen - time to solidify their friendship as co-stars in the Twilight franchise and The Runaways, where they played rockers Joan Jett and Cherie Curie. Of their friendship, Fanning has said: "We're really close. I think it's really great working with your friends, and to be completely open with someone and to have no defence mechanism, you know what I mean?" (credit:Getty)
Celebrity Best Friends(23 of33)
Open Image ModalVictoria Beckham and Katie HolmesKatie and Posh became besties when Victoria moved to L.A., and soon the clean-cut Holmes was rocking a racier shaggy bob hairdo and had upped the fashion factor with her clothes, undoubtedly under the tutelage of Victoria. Although media outlets reported their friendship had soured by 2010, in the December 2011 issue of Elle, Holmes opened up about getting fashion tips from her designer friend. "We go to the same events, and we'll call each other and ask, 'What colour are you wearing?' I'm always interested in what [Victoria] is liking for the season." (credit:PA)
Celebrity Best Friends(24 of33)
Open Image ModalSalma Hayek and Penelope CruzThe gorgeous brunettes often hit the red carpet together, and since they're both mothers, we're sure they've even bonded over baby wipes. After Penelope gave birth to son Leo in January 2010, Salma said: "Penelope is a motherly creature, a warrior by nature. I told her that little boy is the luckiest boy in the world." (credit:Jeff Vespa/WireImage.com)
Celebrity Best Friends(25 of33)
Open Image ModalTina Fey and Amy PoehlerThe friendship between these two funny gals has gone from strength to strength over the years, as they bonded in improv group Second City, as co-stars on Saturday Night Live, in films like Mean Girls and Baby Mama, and as mothers. Poehler has joked that when she met Fey, she "finally found the woman I want to marry." (credit:Getty)
Celebrity Best Friends(26 of33)
Open Image ModalDrew Barrymore and Cameron DiazThe Charlie's Angels co-stars have be BFFs since they were blondes, then brunettes, then blondes again. According to Drew: "She's my sister, but we bro out and have crazy adventures. I always know that she's game. Most people don't know this, but she's very edgy." (credit:Getty)
Celebrity Best Friends(27 of33)
Open Image ModalBeyoncé and Gwyneth PaltrowThese two pals have nothing but the best to say about each other. Paltrow called her BFF "the most talented human being on the planet," while Beyoncé told Harper's Bazaar UK that Gwyneth is: "... what I strive to be one day. You go to her house and she makes you feel like you never want to go home." (credit:WireImage)
Celebrity Best Friends(28 of33)
Open Image ModalChace Crawford and Ed WestwickThe on-screen Gossip Girl pals are best buddies in real-life, and in a case of art imitating life, lived together before their characters Nate and Chuck did. (credit:Getty Images for DirecTV)
Celebrity Best Friends(29 of33)
Open Image ModalFlorence Welch and Blake LivelyThe two girlfriends both love Chanel, and Florence's music. Devoted fan Blake has been to every show Florence and the Machine have done in the U.S. and even hooked her red-headed pal up with a guest spot on her show, Gossip Girl. (credit:Getty Images)
Celebrity Best Friends(30 of33)
Open Image ModalDemi Lovato and Selena GomezThe two Disney buds have been best friends since the tender age of seven. Demi's stint in rehab has only strengthened the bond between the two, and Selena has said of her friend: "You have courage - courage to want to change to be better for yourself. The amount of respect that I have for you is indescribable." (credit:WireImage)
Celebrity Best Friends(31 of33)
Open Image ModalEmma Stone and Taylor SwiftThe two besties met at an awards show and never looked back. Their friendship even extends to the kitchen: "I cook and Emma bakes," Taylor has said. "Those are our specialties. We just talk about our lives. That's how I feel when I'm with friends that I've had for years. Those are the people that I can just rant to. These are the people who know me the best." (credit:WireImage)
Celebrity Best Friends(32 of33)
Open Image ModalRyan Reynolds and Sandra BullockThe duo have been pals for over a decade, and despite rumours in 2011 that they were romantically involved and even having a baby together, both actors have always insisted they are "just friends." (credit:Getty)
Celebrity Best Friends(33 of33)
Open Image ModalTobey Maguire and Leonardo DiCaprioThe two actors met in 1990 on an audition for the show Parenthood, and have remained chummy ever since. They're co-starring together in 2012's The Great Gatsby. (credit:Getty Images for Mobli 2.0)