On a July 1 walk through the Hamptons, Mary-Kate Olsen asked me to reconsider everything I thought I knew about the elite ...

This week, the Bridgehampton resident and co-founder of The Row was seen clutching a brown paper bag and an Amex black card ...

Mary-Kate Olsen—who, along with twin sister Ashley Olsen—prefers to stay out of the public eye, stepped out for a casual ...

Mary-Kate Olsen was spotted out in the Hamptons, looking casual in an oversized tee and sweatpants while at a local farm on Sunday, June 29.

Mary-Kate Olsen traded her high feels for flip-flops in a recent rare outing. Olsen, 39, was photographed out in nature while in the Hamptons on Sunday, June 29. She was spotted on a local farm, ...

Rarely seen former child star -turned-fashionista Mary-Kate Olsen was practically unrecognizable during a laid-back outing in the Hamptons this weekend, where she was seen in an unusually casual ...

Dylan and Cole, Tia and Tamera, Mary-Kate and Ashley. Famous twins who grew up in the 1990s were destined to have more than their fair share of adorable matching moments. The Olsens, who turn 39 on ...

Mary-Kate Olsen is an American actress, producer, author and fashion designer. She made her career debut in 1987 alongside her twin sister Ashley Olsen in the television series Full House.

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.

Even more unusual, Mary-Kate Olsen, who delivered the bulk of the sisters' speech, got ever-so-slightly political in their brief address to the crowd. “It’s such a difficult time right now ...