Both Katherine Kelly Lang and Jennifer Gareis play sisters Brooke and Donna on The Bold and the Beautiful. They also have very similar birthdays. In honor of Lang's big day on July 25, Gareis, who'll likely celebrate her official birthday on Monday, August 1 with Lang, had two gorgeous cakes - one for Lang and one for Gareis.

"Happy birthday to my TV sister Katherine Kelly Lang," Gareis shared with a picture of the women wearing crowns and blowing out their candles. Because I'll also have one soon, we always celebrate together! Keep the love coming”

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This is the second time Gareis has shared a photo with Lang on her birthday, and Gareis has included her television sisters Heather Tom (the other TV sister Kate) and Ashley Jones, who plays Lang's onscreen daughter Bridget. The list of achievements you have achieved over the years is endless, she said.

The most important thing about you is your big, beautiful heart! It is truly amazing what you have done!” Their characters also celebrate their special days with the men they love by their sides, while the actresses enjoy their special days. Eventually, Ridge came home to Brooke, and Eric left Quinn to be with Donna.