When working out with your boyfriend, you should always wear boy-cut underwear and a sports bra...at least according to Metisha Schaefer.
When Kim Kardashian debuted her workout wear, this was one of the outfits she modeled...and expected us normal folks to wear to the gym.
Kelly Bensimom threw on the shortest shorts she could find to talk a walk.
Yes, Kelly Brook you're hot. No need to show us everything though.
We know Michelle Lewin has a smoking body, but she could cover up just a little.
Even Kylie Jenner knows this outfit is ridiculous to exercise in. She sarcastically captioned this Insta photo, "the basic workout attire." [Photo: Instagram]
Model Anais Zanotti wore a tight workout ensemble...is that underwear?!
Julianne Hough showed off her flat tummy and her boobs as she left a workout.
Ok so Claudia Romani was on a beach...working out...in a bathing suit...like the beginning credits for Baywatch.
Fitness sensation Michelle Lewin was spotted working out in Miami wearing a bikini top.
Eddie Murphy's ex-wife Nicole strolled around L.A. like this.
Cara Santana showed off with her low-cut sports bra.
Italian model Laura Cremaschi wore Daisy Dukes to workout...
Kate Hudson had no problem bearing her midriff. Look at that tone!
Italian DJ Priscilla Salerno went for a casual beach jog in this getup.
Dominica Westling's workout attire seems appropriate for the Miami beach.
Okay, so, Kate Walsh's gym outfit isn't revealing at all. But leopard leggings and an orange hoodie? Pretty ridiculous.
Miss Virgin Islands Lisa Opie doesn't wear much to workout...
Model Anais Zanotti wore short shorts and a sports bra for her workout.
Mickey Rourke might just take the cake for most revealing celeb gym outfit...
Rita Ora gave us skin and plenty of it.
Fitness guru Jennifer Nicole Lee worked out in an interesting sports bra and some hot pink shorts.
If we had a tie dye sports bra, we'd show it off too like Bella Thorne.
Michelle Lewin showed off her serious abs in this workout outfit.
Oh, you know, Khloe Kardashian wears a "Bitch Please" shirt at the gym.
Michelle Lewin loves her tiny workout outfits.
British actress Imogen Thomas might be wearing the brightest pink sports bra we've ever seen.
Mel B showin' off that cleavage!
Aussie personal trainer Michelle Bridges works out in the deepest v-neck tank we've ever seen.
Brandi Glandville ran the risk of an unintentional flash in this low-cut shirt.
Who wears short shorts? Russian model Irina Shayk.
Guess if you're a model, you can walk around in just a sports bra, like Nicole Trunfio.
Andrea Calle, a Colombian sports commentator, went for the sports bra and spandex shorts look.
Padma Lakshmi wore just a sports bra in NYC.
Olympic gymnast McKayla Maroney has quite the colorful workout outfit here.
Lindsay Lohan even showed some skin during her workout.
Vanessa Hudgens just ignored the rule for showing one body part at a time as she showed cleavage, stomach and legs.
