Yep, they're siblings all right!
The British royal family on Saturday released a new photo of Princess Charlotte and her older brother Prince George, the first to feature both siblings together. It's also the first public photo of Charlotte since the days following her birth in early May:
According to The Telegraph, Catherine, Duchess of Cambridge, took the photo of her children herself in mid-May, when little Charlotte was only two weeks old.
"There was a very warm public response when Princess Charlotte was born, which was very much appreciated by the Duke and Duchess, and so they wanted to share this with the public," an unnamed royal source told the paper.
Kensington Palace teased the photo of Charlotte and George on Twitter prior to its release, referring to it as "very special" and adding, "Can't wait to share it with you!"
This post has been updated to include additional photos.