Sarah Michelle Gellar
Credit: Jon Kopaloff/FilmMagic

Teen drama superstars Sarah Michelle Gellar and Freddie Prinze Jr., who've been married since 2002, just welcomed a new son! The tyke, named Rocky James Prinze, will play little brother to their 3-year-old daughter Charlotte Grace. The couples' rep told People that both "mother and baby are doing great." So, get out your copy of 1997's I Know What You Did Last Summer, and wish this cute couple congratulations for their growing family!

Plus, see more celebrity moms!