Kristen Stewart returned to the New York Film Festival [1] on Friday to promote her film Billy Lynn's Long Halftime Walk. The actress stunned in a white lace crop top and matching wide-leg pants as she posed for photos on the red carpet. Kristen has been hamming it up in NYC [2] all month long, and while she's been busy promoting three films at the NYFF, she's also been hanging out with Cara Delevingne's ex-girlfriend, St. Vincent. The two are reportedly dating [3], and according to sources, "It's been very romantic . . . Kristen is always whispering closely in her ear and asking her opinion." Only time will tell if this relationship is serious or just another fling [4].
