By Jennifer Davis
Dec 03, 2012 @ 12:48 pm
Gregg DeGuire/WireImage; Lester Cohen/WireImage; Jon Furniss/WireImage; InStyle Hair

Happy 27th birthday, Amanda Seyfried! The blonde bombshell and star of the upcoming Les Miserables turns 27 today. Celebrate her big day by giving yourself an Amanda Seyfried makeover in our Hollywood Makeover Tool. Simply upload your picture to virtually try on on her enviable long tresses, no extensions required. Then, be sure to share the result with your friends on Facebook and Twitter. Click the link below to get started!

MORE:Amanda's Best Looks Ever!• Amanda Seyfried’s High Shine Hair• New Clips From Les Miserables