[Spoiler] Is 25! Which Hot Blond Mama Just Turned a Quarter-Century Old? (PHOTO)

At 25, this hot young mama is turning heads and raising her adorable son! We've watched her make the often difficult leap from child actor to upstanding young star, but who is she?

Still flummoxed? All right, it's hint time: She's married to an athlete, starred in her own series, and has an older sister who also has the acting bug.

When you're ready, click through for the reveal!