Mariah Carey Suffers Wardrobe Misstep in Too-Tight Spandex Jumpsuit

Showing it off in spandex!

Mariah Carey, who flaunts her toned tummy and 30-pound weight loss story on May's Shape cover, was eager to show off her slimmer figure in Austria Sunday.

Unfortunately, the skin-tight, red spandex jumpsuit the star chose for her appearance at the Top of the Mountain Concert in Ischgl left nothing to the imagination and hugged every one of her curves and body parts.

But despite taking the stage in the ill-fitting, Fashion Police-destined ensemble, the 42-year-old singer was all smiles and in good spirits for her fans.

PHOTOS: Incredible post-baby bodies

"Thank you to all the fans who came out to the show! I hope you liked Underneath The Stars which I did especially for the lambs.. LYM!" she tweeted following her performance.

Her performance isn't the only event the star celebrated over the weekend. She and her hubby Nick Cannon, 31, also renewed their wedding vows -- an annual tradition for the couple -- in honor of their fourth wedding anniversary in Paris.

PHOTOS: Mariah and Nick's love story

With the iconic Eiffel Tower in the background, Cannon (on the mend from a bout of medical woes earlier this year) wore a white tux, while Carey flaunted her svelte post-baby bod in a white, gathered gown with a black bow at the waist and mermaid-style bottom, wearing a huge diamond necklace.

PHOTOS: Mariah's mega-engagement ring

"I have to do it every single year," Cannon has explained to Us Weekly of the renewals. "If you were married to Mariah Carey, you'd want to marry her every year too! I just have to keep doing it to make sure it's real."

The happily married couple, who are parents to twins Moroccan and Monroe, are feting "dem babies'" first birthday Monday.

This article originally appeared on Usmagazine.com: Mariah Carey Suffers Wardrobe Misstep in Too-Tight Spandex Jumpsuit