Parenting

These Sisters Are Absolutely Head-Over-Heels Ecstatic About Mom's Baby News

10/30/2014 11:20am ET | Updated October 30, 2014

Whenever any family grows, it's an exciting moment for its current members. But these girls are beyond elated when they find out they're going to have a new sibling.

When their mom announces she's pregnant by surprising them with two custom cookie cakes that read "Big Sister" and "Big Sister...Again," the two erupt in adorable delight.

Watching them look at the sonogram picture -- and embrace one another in happiness -- is so heartwarming.

1. Sophia
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Pictured: Sophia Grace
2. Emma
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Pictured: Emma Watson
3. Olivia
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Pictured: Olivia Munn
4. Isabella
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Pictured: Kristen Stewart as Bella Swan from "Twilight."
5. Ava
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Pictured: Actress Ava Gardner (1922-1990)
6. Mia
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Pictured: Actress Mia Wasikowska
7. Emily
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Pictured: Emily Blunt
8. Abigail
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Pictured: Abigail Breslin
9. Madison
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Pictured: Madison Avenue and 42nd St. in New York City.
10. Elizabeth
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Pictures: Actress Elizabeth Taylor (1932-2011)
1. Noah
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Pictured: Russell Crowe who plays Noah in 'NOAH'
2. Liam
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Pictured: Miley Cyrus, right, and Liam Hemsworth
3. Jacob
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Pictured: Taylor Lautner as Jacob Black from "Twilight"
4. Mason
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Pictured: Kourtney Kardashian and Mason Dash Disick
5. William
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Pictured: Prince William
6. Ethan
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Pictured: Ethan Hawke
7. Michael
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Pictured: Michael Jordan
8. Alexander
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Pictured: Equestrian Statue of Alexander the Great at Thessaloniki, Greece
9. Jayden
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Pictured: Jayden Smith, left, and Willow Smith
10. Daniel
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Pictured: Actor Daniel Radcliffe