SEATAC — “Do you want to see the wigs?” asked Melissa Turner, known online as Melly, as she walked into the break room of the Safeway supermarket, in SeaTac. She opened a locker to reveal a shopping bag overflowing with synthetic hair. There were also props and costumes — an inflatable cow suit, several loud button-up shirts and a trompe l’oeil garment resembling a muscled male torso.