Retro rockers: Mariah Carey and beau Bryan Tanaka both wore 1980s hair metal costumes to Heidi Klum’s 20th Annual Halloween Bash in New York City on Thursday

Carey, 49, showed off her legs and taut yummy in black leather booty shorts and a matching bra.

She covered up a bit with a super-cropped jacket that was left wife open to show off her womanly curves and assorted necklaces.

Adding to her rocker-girl look, she rocked a big blonde wig, fishnet stockings and knee-high red leather boots.

Revelaing: Carey, 49, showed off her legs and taut yummy in black leather booty shorts, matching bra, along with a super-cropped leather jacket

Dr. Feelgood: Adding to her rocker-girl look, she rocked a big blonde wig, fishnet stockings and knee-high red leather boots.

Ax time: Carey also donned a green guitar over her shoulders

Of course, Carey’s outfit wouldn’t be complete with that green guitar over her shoulders.

Her man also looked 80’s ready in tight black pants, back patterned-tank top, chains and a long silvery-feathered wig.

During the night, the couple took the time to chat with the masters of ceremony, Heidi Klum and her husband Tom Kaulitz.

Tanaka also looked 80’s ready in tight black pants, back patterned-tank top, chains and a long silvery-feathered wig

History: Carey and Tanaka have been dating for more than two years, although they have been friends since 2006, when he was hired as one of her back-up dancers for her 2006 tour

Like the past 20 years, Klum once again wore a spectacular costume, this time as a gory humanoid alien.

Kaulitz was dressed as some sort of bloodied astronaut, who was presumably one of Klum’s alien victims.

Carey and Tanaka have been dating for more than two years.

They have been friends since they met in 2006, when Taknaka was hired to be one of her back-up dancers for her Adventures Of Mimi Tour.

Hosts with the most: Carey also stopped to pose with masters of ceremony, Heidi Klum and her husband Tom Kaulitz

Creature feature: Klum was decked out as a gory humanoid alien

The details: The Hero singer also wore a red chock collar around her neck