Mariah Carey has just proven that gym wear doesn't need to be old-fashioned since she just tried slipping into a pair of fishnet tights and stiletto heels for her workout. The pop star was very gorgeous and sexy as she stirred up into the gym by showing off a particularly outrageous outfit.

Carey definitely looked incredible as she flashed her flesh in her over-the-top sportswear. She was showing off her pert bum as she climbed into one of the machines while into her fishnets and high-heeled shoes. She was also seen pumping iron with some other girls in the gym while showing off her ample cleavage through her plunging top, The Sun reported.

Carey's saucy gym outfit was already documented in a series of Instagram post of her page. She even made a caption saying, "Climb every mountain" while adding .gifs showing off her every workout routine. It was a way for the pop diva to give her fans an insight of her fabulous fitness regimen.

Just like most of the stars, Carey worked out with her trainer. Her celebrity workout guru was known as Gunnar Peterson. The pop star actual workout gear was a cleavage-baring black leotard, silk track jacket, fishnet stockings, and of course the skyscraper heels which she got from Rihanna's Fenty x Puma Collection, Refinery 29 reported.

Her attire was somewhat ridiculous but at the same time dangerous; but most people love it. While most trainers wouldn't recommend anyone to hit stairs on heels, Carey didn't let her wardrobe get into the way of her exercise.

Others thought that maybe she is ready to run into heels as she has been ready for a concert. She has also posted a video of her work out on her personal Instagram account and ideally it reached for about 1.1 million views already. Since many were delighted, some were already drafting a Carey workout DVD soon.