Bradley Cooper Surprises Lady Gaga Backstage at 'Saturday Night Live': 'What a Guy!'

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Lady Gaga brought two new tracks, "A-Yo" and "Million Reasons," off of her newly released album, Joanne, to the Saturday Night Live stage this weekend for a pair of performances that brought the house down.

Backstage, however, the singer was getting some support and love from her future A Star Is Born co-star, Bradley Cooper.

"LOOK who showed up to watch me perform!" Gaga captioned an Instagram pic she snapped with the four-time Oscar nominee. "What a guy. Talkin' creative and enjoying some backstage fun."

WATCH: Lady Gaga and Bradley Cooper Officially Starring in 'A Star Is Born' -- He'll Direct and She'll Write the Music!

Gaga also took the time to share her appreciation for designer Marc Jacobs for her hot pink and paisley ensemble, writing, "Thank you @marcjacobs for the INCREDIBLE #JOANNE FASHION. IT IS SO WELL MADE. I've Buried the shoes in nondescript location and only I know where they are. SORRY."

During the episode, brilliantly hosted by Tom Hanks, Gaga performed her country rock anthem "A-Yo," while shredding on a guitar and dancing like a mad women. The popstar was joined by Mark Ronson, who accompanied Gaga on guitar.

For her slower ballad "Million Reasons," Gaga ditched the kinetic set design and lighting scheme for a simple set up with her on piano and co-writer Hillary Lindsey singing back-up vocals.

WATCH: Lady Gaga Simplifies Her Style to Keep the Focus on Her Album: Can't Make Music With a 'Lobster on Your Head'

While Gaga unfortunately didn't have a cameo in any of the night's sketches, Hanks did a masterful job leading the sharply written episode. The night began with another cold open mocking the presidential debates, and went on to celebrate Halloween with some truly bizarre and brilliant bits of comedy.

Standing out among the night's many offerings was Leslie Jones, who addressed her summer hacking scandal in a hilarious segment on "Weekend Update."

Jones, who often appears as herself for comedic commentaries on current events, was asked about her thoughts on cybersecurity, which has been a hot button political issue during the presidential race.

RELATED: Alec Baldwin Skewers Donald Trump's Third Debate Performance, Pokes Fun at Brother Stephen on 'SNL'

"I was recently hacked myself," Jones said, referring to an incident in August when hackers posted nude pics of the comedian, as well as her private info, on her website.

"All they did was release some nude pics of me, which is nothing because, I don’t know if y'all know this about me, but I ain't shy,” Jones told "Weekend Update" co-host Colin Jost. "I am very comfortable with who I am. I am an open book. I keep my porn in a folder labeled 'porn.' If you wanna see Leslie Jones naked, just ask!"

"What I’m trying to say is, if you want to hurt anybody these days, you’re going to have to do way more than leak their nudes or call them names," Jones continued. "You can’t embarrass me more than I’ve embarrassed myself."

WATCH: Celebs Express Outrage Over Leslie Jones Hack, Blast the 'Hate-Filled' Act

For more on SNL's coverage of this year's contentious political race, featuring Alec Baldwin playing Donald Trump and Kate McKinnon's skillful portrayal of Hillary Clinton, check out the video below.