Judging by the throngs of people trying to get into Wes Gordon’s presentation on Saturday, the momentum is building for the young designer — and for good reason. He expanded his collection for fall with a larger selection of knits and eveningwear. He said he was going for a disheveled kind of elegance, noting “Rooney Mara as Estella from ‘Great Expectations’ ” as inspiration. Gordon played with different textures and prints, teaming a chain-mail tank top with a deep orange skirt with a cutaway hem, and a sheer black blouse with a full skirt in a burgundy-and-gold medallion print. For evening there were several dramatic ensembles, including a dark green scarf top with a floor-length velvet skirt embroidered to look like tweed. Mara, and many other young actresses, may want to take down Gordon’s number.