See Mary-Kate Olsen's Huge Engagement Ring!

The news of Mary-Kate Olsen's engagement to Olivier Sarkozy was a bit of a surprise at the end of last week, and now we have some confirmation in the form of a sparkly ring on her left hand! Mary-Kate stepped out with her twin sister, Ashley Olsen, this afternoon in NYC, and while the girls were protecting themselves from the chilly Winter air, MK did manage to flash her new bling. At 27, Mary-Kate has been dating the 44-year-old Olivier for almost two years. The two are often seen cozying up courtside at NBA games, and she's also become close with his two children from a previous relationship. Congrats to Mary-Kate and Olivier — read on to get a better look at the ring!