Mary-Kate Olsen  and her sister Ashley arrived in style for the Louis Vuitton runway show in Paris on Wednesday (fun fact: their younger sister, Elizabeth, was close by, sitting front row at Miu Miu with Lupita Nyong'o and Jared Leto ). In addition to a sleek coat and oversize sunglasses, Mary-Kate was also rocking her new engagement ring! Rumors swirled last week that Mary-Kate's boyfriend of two years, French banker Olivier Sarkozy, popped the question  and just days later, we spotted the Row designer wearing the stunning bauble  on her left ring finger in NYC. The ring is speculated to be Cartier's vintage four-carat  European-cut diamond and sapphire ring, which happened to sell at Sotheby's auction on Feb. 6 for $81,250. Mary-Kate and Olivier have yet to confirm the engagement news, but either way, we're happy to keep getting glimpses of that gorgeous ring.
Source: Pacific Coast News Online