It’s a big day for Hollywood birthdays! Amy Smart celebrated her 36th today, Keira Knightley turned 27, and Diana Ross blew out 68 candles. Congratulations, ladies! To celebrate, we’re taking a look back at Keira Knightley’s beauty transformation, from breakout Bend It Like Beckham star to glamorous red carpet regular. Click through the gallery to see her best beauty moments.

KEIRA'S BEST BEAUTY LOOKS

MORE:
• Keira Loves Roksanda Ilincic
Keira at the Venice Film Festival
See More Hollywood Transformations!