Ashley Olsen toted her mat to a yoga studio in Santa Monica on Monday — check out our 2010 holiday gift guides for tips on what to give the fitness lover in your life! She was still wearing the diamond ring she debuted earlier in the week as she waited for class to begin. Ashley is sporting the rock on her right ring finger rather than her left, but her new accessory comes on the heels of rumors that her boyfriend Justin Bartha was planning to propose. He didn't join Ashley as she flew back to LA from NYC on Sunday night, though their big French bulldog buddy did. They made the trip home with Mary-Kate after spending much of the month in the Big Apple where they stopped by stylish soirees and teamed up for charity.