First came callus-sucking fish. Next, the baby food diet. Then, vajazzling. At this point, nothing fazes you.Not even a facial for your bum. It’s called (of course) the Sweet Cheeks, and though it means throwing shame out the window, it’s a small sacrifice to pay for big results.It begins with you facedown on a table. A deep cleanse ensues, followed by exfoliation under steam to remove dead skin cells. Wince your way through extractions (depending on your skin concerns) before a series of hot towels and a cool mask are applied to your derriere. Get sublime foot and scalp massages as your keister hydrates.The final touch is a flab-fighting firming cream that stimulates circulation, reduces cellulite, and leaves your butt feeling like, well, buttah. In the end, it is truly all it’s cracked up to be. (Sorry, we couldn’t resist.)Tiffani Kim Institute, 310 West Superior Street, between Orleans and Franklin Streets (312-260-9040 or tiffanikiminstitute.com).Photo: ThinkstockUp to 80% off Tom Ford SunglassesYour future’s so bright, you gotta wear shades. But not just any pair: Grab glam frames from Tom Ford at up to 80% off on our sample sale site.