Winning Number
Before taking home the best accessory designers of the year award, MK stunned in an all-black ensemble from her label The Row alongside sister Ash at the 2014 CFDA Awards.
Vintage Twins
Mk wears a striped vintage Chanel long-sleeved gown alongside sister Ashley, wearing vintage Gianfranco Ferré, at the 2014 MET gala.
Kimono Chic
MK shows up to The Row handbag launch party in Paris in a funky track suit-kimono frock. Oddly, this outfit choice doesn't seem to reflect the line of bags she helped design. Go figure!
Molten Glow
M.K.'s about 30 years ahead of her time, but the Olsen twin would look great as a middle-aged matron in this metallic Chanel jacket, skirt by the Row and Louis Vuitton sandals at the 2011 CFDA Fashion Awards.
Givenchy Glam
Vintage doesn't mean much when it doesn't fit—even if it is Givenchy! Mary-Kate gets a fail for her oversize frock at the 2011 Met Costume Institute Gala.
Boho Vibes
Oversized orange pants and a cropped red fur jacket get the M.K. treatment at the 2011 Tribeca Film Festival.
Cool & Casual
At the Textile Elizabeth and James launch in New York City, Mary-Kate dresses up her light denim shirt with black leather leggings and strappy heels.
Disheveled Divas
M.K. spends a night at the opera with her sis in a sheer black dress under a sleeveless gray overcoat.
Blanc and Black
The star opts for a more casual look than her sister, donning a black silk blazer, blouse and ankle-zip pants—accessorized with black Louis Vuitton sandals, Balenciaga belt and snakeskin Prada clutch.
Comfy Cozy
The actress stays warm in an oversize gray fur coat at the RETNA: The Hallelujah World Tour in NYC.
Incognito
Is that Mary-Kate? It's hard to recognize the petite star under the baggy coat, sunglasses and large hat, plus a leather satchel and suede ankle boots.
Rain Rain Go Away
The starlet heaps it on with a black fur coat, flare pants and a very fashionable umbrella while out and about in Los Angeles.
Mary-Kate sticks to her trademark boho chic style with this interesting little number at a party in New York.
What on earth? It looks like this Olsen twin took a page out of Bigfoot's style book with an enormous furry black jacket at a party in New York.
Mary-Kate and her twin sis keep it simple in black and white solids at the 2010 CFDA Fashion Awards.
Poor Mary-Kate (in a leopard-print top with baggy black pants) looks a little tired at the Holy Rollers NYC premiere. Time for a nap, hon!
The minimogul makes a rare appearance in denim—paired with a bright green matronly jacket—at Otarian restaurant's opening party in the Big Apple.
At the Lend Me a Tenor Broadway opening night, M.K. and her sis are in full-on crazytown mode, with the matchy sheer black dresses, white clutches and oversize sunnies.
Promoting their juniors line Olsenboye for JCPenney, M.K. keeps it business casual and cute in New York City.
In her favorite witchy black (with an awesome electric-blue clutch thrown in) at the Elle Style Awards, Mary-Kate plays evil next to "good" sis Ashley. Love the drama, ladies!
Dayum, Mary-Kate brings the drama to amfAR's Fashion Week gala, rocking a sheer mermaid gown under a giant feather coat.
M.K. punches up her black gown with a colorful cropped basket-weave jacket at the Nine premiere in Manhattan. Is it grandma chic or geek?!
Mary-Kate looks eccentric—but warm and toasty!—in a leopard-print coat, black hat and bright-red stilettos at a tribute to Tim Burton in NYC.
In New York City for their induction into the CFDA, the twins coordinate in cream-and-black outfits.