Ashley Olsen had wet hair yesterday when she left a hotel in NYC. She's hanging out in the Big Apple with her sister Mary-Kate, who was also spotted running errands around the city during the p.m. hours. Mary-Kate and Ashley's new venture StyleMint is inching toward a launch, and the sisters just released a new promotional video for the project. They partnered with the online group BeachMint for the company, which also works with Kate Bosworth on a jewelry site — Sienna Miller just partnered with the actress to create a bracelet for Kate's StyleMint. BeachMint has grand plans for expansion with many other celebrities and sales sites, but Mary-Kate and Ashley's t-shirt business is next to open later this month.