You come back to the shack after a trip around the woods looking for weird fernomnias. You walk into your and Mabel's room. she is a turquoise sweater with a purple stripe in the middle. oddly she was also in turquoise pumps that she was prancing around in.

"Hey Dipper, sorry i didn't see you there, been prancing around in these cute shoes that Wendy let me borrow." she giggles