Super Bowl 50 hadn't even started, and it already had a showstopper: Lady Gaga.

Mother Monster looked appropriately patriotic in an all-red Gucci two-piece -- glittery, of course -- as she performed the National Anthem alongside a piano accompanist on one of the biggest stages in music and NFL history.

NEWS: Super Bowl 50: Lady Gaga Will Sing the National Anthem 

Her voice sparkled as brightly as her star-spangled blue nails and those "red-slipper eyes," which she previewed on Instagram before she conquered the Super Bowl stage at Levi’s Stadium in Santa Clara, California. And for such a high-profile performance, Gaga didn't have to wear a poker face to hide her nerves. There were none!

"I'm so excited!" she told ET exclusively as she prepared to take the stage. Afterwards, ET was there as Gaga wiped away tears and blew kisses to people who were praising her performance.

Before taking the Super Bowl 50 stage, Gaga honored the great Whitney Houston, who famously sang the National Anthem in 1991, which is still considered one of the song's very best renditions. "(It's) the most beautiful thing I'd ever heard," Gaga said during a pre-game interview shown on CBS.

WATCH: Coldplay Preps for Epic Super Bowl 50 Halftime Show

Now that Gaga's successfully made from singer to actress -- the 29-year-old won a Golden Globe for her performance in American Horror Story -- she's getting back to music… and in a big way!
Aside from her Super Bowl show-stopper, Gaga is set to pay tribute to the late David Bowie during the GRAMMY Awards on Feb. 15

Watch Gaga crush another performance below, when she honored Julie Andrews with a stellar "Sound of Music" tribute during last year's Academy Awards: