Pen15

Costume designer Melissa Walker talks us through the uncomfortably all-too-familiar "lame pool party" tankinis, that oversized "Tommy Hil" T-shirt and more.

But first, costume designer Melissa Walker dishes on our favorite season-one wardrobe moments, including the shared hot-pink thong and Spice Girls outfits.

The actress, writer and producer talks summer wedding style, early 2000s fashion nostalgia and the evolution of shopping with her mom (and 'PEN15' co-star), Mutsuko.