Mary Kate Olsen

Following their 'Full House' fame, Mary Kate and Ashley Olsen became tiny girl bosses as they starred in a number of children's shows and movies.

According to insiders, Luann de Lesseps and Olivier Sarkozy seem to be hitting it off during the early stages of their romance.

John Stamos sadly revealed that since the tragic passing of Bob Saget, the 'Full House' cast has not seen as much of each other.

Mary Kate & Ashley Olsen have gone through a complete transformation before our eyes.

The famous sisters are gearing up for a tell-all memoir about their experiences in Hollywood.

The NYC townhouse Mary-Kate Olsen lost in her divorce with ex-husband Olivier Sarkozy has hit the market.

The couple rarely steps out into the spotlight.

Mary Kate and Ashley did it first.

The twins' former co-star is expecting his first child with fiancée Caitlin McHugh.

They’re not going to let a little thing like a strong breeze stop them.

See a gallery of celebrity-endorsed products from New Kids on the Block, Mary-Kate and Ashley Olsen and more stars that we wish were still available.

Best celebrity pictures of the day and paparazzi photos of celebs like Britney Spears at the gym and Leonardo Dicaprio flyboarding.

Celebrity paparazzi photos of the day of Justin Theroux shirtless, Ciara, Jennifer Aniston.

See who showed up where (and what they wore) in our par-tay recap gallery!

Here are some of the most radical celebrity makeovers/makeunders we've ever seen... for better or for worse!

See what Khloe Kardashian, Mandy Moore, Lisa Vanderpump and more of your favorite stars were up to in today's OK! Quick Pics.

See a gallery of celebrities wearing cute scarves, tying their scarves in fun ways, and other fashionable fall clothing.

She may be Michelle Tanner to us forever, but Mary-Kate Olsen keeps right on growing up.

Celebrities such as Hayden Panettiere, Kourtney Kardashian, Jason Priestley and more spotted dining, shopping and partying around town.

Celeb news and reports from August 30th, including Mary Kate Olsen's horse, Matt Damon talking Batman, and more.

You Have To See These 5 Instagrams From the Full House Reunion at John Stamos' 50th Birthday!

Identical strangers, sloppy joes, and a romantic runaway horse scene. Mary-Kate & Ashley Olsen: A Love Affair With Outerwear Mix the above ingredients together,

If you're anything like me (kinda tall, has hair, wears t-shirts sometimes) then you were a fan of Mary-Kate and Ashley Olsen growing up. They had everything I

Got a pop culture guilty pleasure that you're afraid to admit? Don't we all! Today is National Honesty Day—the day to rid yourself of all the unbelievable and

Have we mentioned we're total '90s junkies? Nothing makes us happier than flipping on the TV, kicking back and watching a mildly-cheesy sitcom with outdated

Maybe it's that this show reminded me of their early years on Full House or that they made platform sketchers seem so cool. Either way, I had a childhood

OK! chatted with Hot Chelle Rae backstage at the Z-100 Jingle Ball Friday night in New York City.  The guys explain why they WON'T be admitting Selena Gomez is

Brace yourselves for this ridiculous revelation: 25 years ago yesterday, Full House aired its very first episode. Yep, folks. It has been that long. We know how

Merely a few days ago we told you about Mary-Kate and Ashley Olsen winning the Designer of the Year Award for their line, The Row, at the Council of Fashion

From sitcom stars to fashionistas, is there anything the Olsen twins can't do? Last night at the Council of Fashion Designer of America Awards, Mary-Kate and

In a pairing nobody saw coming, it's rumored Mary-Kate Olsen has found love with former French president, Nicolas Sarkozy's, half-brother Olivier Sarkozy. OK!

Elle UK has put out a double cover for the month of April to accommidate twins Mary-Kate Olsen and Ashley Olsen. The child stars turned fashionionistas open up

Ashley Olsen's name has been making headlines today for reportedly getting cozy with Jason Sudeikis, but it's actually her twin sister Mary-Kate Olsen who

• Live Chat with "Pretty Woman" Toddler's & Tiaras star Paisley Dickey! (Radar Online) • Giuilana Rancic polls people on best boobs in Hollywood.

Saturday Night Live funny woman Tina Fey gives birth to her second daughter, Penelope Athena Richmond. (E! Online) Watch Mary-Kate and Ashley Olsen splash

• Happy Birthday, Mary Kate and Ashley! (PopSugar) • Clarence Clemons, Bruce Springsteen's mainstay saxophonist, suffers stroke (E! Online) • Catherine

Rachel McAdams attended a special screening of her movie, Midnight in Paris at the Tribeca Grand Hotel last night in NYC. Rachel arrived with her longtime beau,

• Adele opens up to OUT magazine about her new album's success and letting the one she loved get away. (Huffington Post) • Madonna and Lady Gaga are relatives?

Stars lined the red carpet at the Metropolitan Opera's gala premiere of Rossini's "Le Comte Ory" last night in NYC.  Since the opera is of course a classy

• Mary-Kate and Ashley Olsen launch new fashion line (Just Jared) • Terrence Howard's wife files for divorce (E! Online) • Vanessa Hudgens poses for new

Mary-Kate and Ashley Olsen may have had the spotlight for years and years, but look out, sisters! Their youngest sibling, Elizabeth Olsen, is creating quite a

• Katy Perry and Nicki Minaj are VH1 Divas saluting the troops. (PopEater) • If Jennifer Aniston were single, James Franco says he'd date her! (Celebuzz) •

On Monday night, Mary-Kate and Ashley Olsen sandwiched up to their Full House dad Bob Saget at the Cool Comedy Hot Cuisine Gala. Bob hosted the event, held at

There must've been something daunting on the red carpet last night at WWD's 100th Anniversary Gala, causing Ashley and Mary-Kate Olsen, both swathed in layers

• Jay-Z fighting for presidency in eight years? (PopEater) • Taylor Swift to sell one million albums in one week? (Celebuzz) • LeAnn Rimes has no regrets about

Mary Kate and Ashley Olsen shop together at Alexander McQueen. (Just Jared) Britney Spears posts exclusive clips of her upcoming Glee episode. (Pop

• Ellen DeGeneres gives Mary-Kate and Ashely Olsen a big present on her show. (Just Jared) • Beyoncé gearing up for "biggest album ever." (PopEater) • Morgan

For romance, family time or an all-girls getaway, Cabo, Acapulco and Cancun offer much more than just sun, sea and sand. GET ROMANTIC IN ACAPULCO Frank

She's just 24-years-old but Mary-Kate Olsen has grown up on TV, co-founded a business empire with her sister Ashley and launched a highly successful fashion

Ever wonder what would happen if Mary-Kate Olsen and Zac Efron sat down for dinner? Well, blogger/actress Elaine Carroll creates a parody based on that very