Lady Gaga and Metallica, killing it at the Grammy Awards.

Lady Gaga flashed the new trendiest kind of cleavage – underboob – on Sunday’s Grammy Awards red carpet.

The 30-year-old pop diva paired her revealing black crop-top with matching thigh-high PVC boots selected by stylist Brandon Maxwell.

The Super Bowl LI halftime headliner rocked rose gold highlights in her hair, classic Ray-Ban aviators, and tiny chained latex shorts.

Lady Gaga has delivered another spectacular Grammy performance. Hot on the heels of her incredible Super Bowl Halftime show, Gaga joined rock legends Metallica at this year’s Grammy Awards for a fiery duet on “Moth Into Flame,” a single from their latest album.