Hilary Duff Bares Her Sexy, Unretouched Bikini Bod on Twitter

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Well, here's a beautiful way to head into the weekend!

Hilary Duff graciously took to Twitter on Thursday and flaunted her fabulous figure in a colorful bikini while also revealing a new gig on behalf of a very worthy cause.

PIC: Hilary Duff Shows Off Smokin' Bikini Bod

"Hiiii! I'm partnering with @Aerie to share #AerieREAL swim pics & raise $ for NEDA!! #aeriepartner," the 28-year-old actress wrote.

The National Eating Disorders Association [NEDA] is a non-profit organization dedicated to providing awareness and education about eating disorders and negative body image. NEDA has partnered with Aerie in support of furthering body positivity in the media.

PIC: Hilary Duff Flaunts Major Cleavage

The yummy mummy of one joins an enviable list of gorgeous personalities, such as Emma Roberts and Iskra Lawrence, who once modeled for AerieREAL's body-positive ad campaign.

MORE: Emma Roberts' 'Top Secret Project Revealed'

The "Younger" star has become a paragon of toned abs, fit thighs and healthy living for her fans and fellow moms recently. From vacationing on the beaches of Hawaii to sharing sultry selfies, Duff continues to prove that she's all grown up and hotter than ever.