OHMYGOSSIP — Mariah Carey wears high heels to work out. The 47-year-old powerhouse has taken to social media to showcase her fitness routine with American personal trainer Gunnar Peterson, which sees her run, complete a set of bicep curls and do mountain climbers in the Fenty x PUMA stiletto boots, fish net tights, black bodysuit and bomber jacket. The ‘Heartbreaker’ hitmaker showcased her unusual attire for the steamy exercise drill on social media in a string of short Boomerang videos, which were shared on her Instagram account. She captioned the string of clips: “Running amok. @gunnarfitness “We must we must … 😉 @gunnarfitness “Climb every mountain @gunnarfitness (sic).” And Rihanna – who was announced as the creative director of the sportswear giant PUMA in 2014 – and has launched a variety of Fenty x PUMA collections for the label has claimed she has “made it” in life now the golden-haired powerhouse has admitted to wearing her designs. Alongside an image of the singer – who has five-year-old twins Moroccan and Monroe with her former partner Nick Cannon – exercising in her creations, which the 28-year-old vocalist re-posted on her photo-sharing site, she wrote: “Yo I made it!!! @mariahcarey in #FENTYxPUMA (sic).” Meanwhile, Mariah – who split from the 49-year-old Australian billionaire in October 2016 – has recorded a new ballad titled ‘I Don’t’ about her former partner and their aborted engagement. Speaking previously about the single, Mariah said: “Ever since the tour wrapped I took some time just to process my feelings and I started writing a song to express what I’ve been going through. “And if you’re not getting the love that you need from someone that you’re supposed to be in a real relationship with, then why remain in that situation?”