Sarah Hyland Celebrates 21st Birthday in Las Vegas (PHOTOS)

Sarah & Matt's PDA
Sarah Hyland & BF Matt Prokop kiss at Planet Hollywood.
Haley Dunphy is all grown up!

Modern Family actress Sarah Hyland celebrated her 21st birthday at The Bank Nightclub in Las Vegas Saturday night. Sporting a stunning Chagoury Couture dress, Sarah marked the milestone with boyfriend Matt Prokop and several close friends. The young starlet noshed on sushi and Beau Joie champagne before digging into her custom made Jean Phillippe birthday cake.

Grey’s Anatomy star Jesse Williams was also at the nightclub to help Sarah ring in her 21st. 

Sarah is currently filming more Modern Family episodes in Los Angeles. Check her out teaming up with co-star Sofia Vergara in the gallery below!

Tags: Sarah Hyland