Looks new to me. Under that coat is the beautiful Pucci dress.
BTW, People's Choice tweeted this as a teaser. "Come on twi-hards... We know you'll love this one!" People’s Choice Awards will be on Wednesday, January 5th at 4:30 p.m. PT / 7:30 p.m. ET for the Red carpet arrivals. Show at 9/8c.