POPSUGAR Celebrity Mary-Kate Olsen Slide Photo of Mary-Kate Olsen in London Warehouse Wonder by Celebrity 2/24/10 0 Shares Like us on Facebook Sign up for our daily newsletter > Mary-Kate Olsen stopped by a London warehouse with her sister on Wednesday. Image Source: INFphoto.com Read More HotMary-Kate Olsen Mary-Kate Olsen Mary-Kate Olsen's Bold Shoe Choice Is Not What We Expected Mary-Kate and Ashley's 75-Year-Old Muse Is About to Become Your New Style Icon 13 Moments That Made Us Wish We Had a Stylish Sister by Our Side She Wore THAT? 25 Then-and-Now Style Pics From Your Favorite It Girls POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Be in the Know With OurCelebrity and Entertainment Newsletter Personalize Young Hollywood Movies TV A-Listers Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.