Mary-Kate Olsen is engaged!
The couple started dating in 2012 and are frequently spotted together at Knicks games in Madison Square Garden. We can't wait to see Mary-Kate's wedding gown -- and of course the bridesmaids dresses! Ashley will most likely be Maid of Honor, right..? And their (equally chic) sister Elizabeth is bound to be a bridesmaid.
We're betting on Mary-Kate and Ashley collaborating on a unique dress just for the bride-to-be. A major perk of being a fashion designer, don't you think?
This is Mary-Kate's first marriage and Olivier's second -- his two children from his previous marriage are aged 10 and 12.
Click through the gallery above to see Mary-Kate and Ashley's style through the years!