AceShowbiz -

Already has a very full plate on her agenda nowadays, Amanda Bynes surely needs to keep herself fit and healthy and that's why she needs 'Milk.' Realizing the important of the drink for her health, the young actress has become the latest celebrity to don the "Got Milk?" ad campaign.

In the advertising campaign, which is created to "encourage teens to be active and drink 3 glasses of lowfat or fat free milk everyday to stay healthy," Bynes is seen wearing a white Body by Milk shirt, while sporting the never-missed milk mustache with a butterfly perched on her nose.

Byne's ad is accompanied with the tag-line that reads, "Metamorphosis. What's changed since the Amanda Show? Me. And milk has helped. Studies suggest teens who choose milk over sugary drinks tend to be leaner, plus the protein helps build muscle. Grow beautiful, inside and out."

The ad, according to JustJared.buzznet.com, will debut in Rolling Stone by November 2nd.

A former show host on Nickelodeon and has appeared in several successful television series on Nickelodeon in the late 1990s and early 2000s, Bynes is now a movie actress. She's appeared in such films, as "She's the Man" and "Hairspray."

In addition to her acting career, Bynes is having her own line of fashion, called Dear.