Mariah Carey Rocks FENTYxPuma Heels in the Gym, Rihanna Reacts: 'Yo I Made It!' [Photos + Video]

Only Mariah Carey will show up for a workout wearing heels.

The singer hit up celebrity trainer Gunnar Peterson’s gym on Thursday night rocking  fishnets, a leotard, jewelry and a pair of Rihanna’s FENTY x Puma heels, which cost between $375 and $600.

We must we must … ;) ???? @gunnarfitness

A video posted by Mariah Carey (@mariahcarey) on Feb 2, 2017 at 7:30pm PST

Climb every mountain ???????????? @gunnarfitness

A photo posted by Mariah Carey (@mariahcarey) on Feb 2, 2017 at 7:35pm PST

Running amok. @gunnarfitness

A video posted by Mariah Carey (@mariahcarey) on Feb 2, 2017 at 7:18pm PST

Rihanna caught wind of Mariah’s choice of shoe and took to Instagram to express her excitement.

Yo I made it!!! @mariahcarey in #FENTYxPUMA

A photo posted by badgalriri (@badgalriri) on Feb 2, 2017 at 8:54pm PST