She does

"Okay." Both you and Simon are somewhat surprised by how quickly she agrees, her fingers moving across the clasp of her skirt undoing it and letting the wet material fall to the floor, revealing a pair of damp pink Hello Kitty panties. "Your turn." She adds, stepping completely out of the skirt.

Still surprised Simon lets go of his cock again, slowly sliding his boxers down to join his trousers at his ankles his erect cock springing out from the tails of his shirt.