Two girls who have slept with the same gent. Equivalent to the male version, Eskimo brothers.
Girl 1-"OMG, guess who i hooked up with last night? Sean."

Girl 2-"No way! i did too a few months ago!"

Girl 1-"I guess that makes us sleeve sisters."
by shite87 August 24, 2011
Get the sleeve sisters mug.
what james Charles would say if it ever got cold in California
john: oh my gosh it's so cold
ian: then put on your sister sleeves
by sister sleeve wearer August 24, 2018
Get the sister sleeves mug.