Mamie Gummer, 23, actress. Got Her: At last night's launch party for TheseThreeThings. Stalked Her: Because we wanted a closer look at her wool and silk jersey dress. Also, we were pretty sure we recognized her from a W Magazine article... Shot Her: Because after staring at her dress for ten minutes, we still needed more time. She Says: "I feel super in this outfit! The dress is one-size-fits-all, so you can tie it really tight, or wear it more a-line... I guess you could flip it to the front, too. The flats are A.P.C. and the t-shirt is American Apparel. I like that the outfit is simple, but also quite unique." We Say: True love comes in layers.