mk and ash Mary Kate and Ashley Olsen: Happy 25th birthdayMary-Kate and Ashley Olsen celebrate their 25th birthday on Monday (June 13).

The twins — in a mere quarter of a decade — have gone from cute kid actors to mysterious prodigies steering their own empire. What started as a clever marketing idea — sell the heck out of these adorable twins — has evolved into a high fashion powerhouse with no sign of slowing down.

What will the next 25 years bring for Mary-Kate and Ashley Olsen? Share your predictions below, and be sure to check out our Mary-Kate and Ashley: 25 photos for 25 years gallery.

Posted by:Liz Kelly Nelson