In celebration of the sisters' 39th birthday, here's a look back at at some of the cutest lookalike moments from their early ...

This duo gives me serious Mary-Kate and Ashley vibes. Their whole story is ... and Isabel on the official American Girl website. The dolls and all their accessories are also available online.

And despite their girlish faces and kewpie doll eyes, they always seemed ... It’s so much about proportion,” Mary-Kate explained. “Because Ashley and I are petite people, proportion has ...

It's been a New York minute since Mary-Kate Olsen and Ashley Olsen released a new movie. But that doesn't mean we can't celebrate The Row founders' birthday by taking a look back at their film oeuvre.

They are like collectors' dolls, big-eyed and pocket-size. They are two halves of one whole, for that yin-yang split in all of us. Ashley Olsen is our girlie-girl; Mary-Kate is our tomboy.

Tuesday night, Mary-Kate and Ashley Olsen brought out some of London’s biggest It girls — from singer Amy Winehouse to socialite Peaches Geldof — to show off their new high-end clothing The ...

Should Mary-Kate and Ashley Olsen ever decide they want to revisit ... marketing everything from branded toothpaste to Barbie dolls and an endless line of direct-to-video films, they stepped ...

In 1993, Mary-Kate and Ashley co-founded Dualstar Entertainment ... With a line of Mattel dolls, a fan club magazine, posters, clothing, shoes, purses, and even CD players with their name ...

releasing everything from branded toothpaste and dolls to books and direct-to-video movies. Mary-Kate has said she and Ashley were akin to “little monkey performers” as children.