WATCH: Lady Gaga, Bradley Cooper surprise crowd with 'Shallow' duet in Las Vegas

Fans of "A Star Is Born" got a special treat Saturday night at Lady Gaga's show in Las Vegas.

Explore>> Lady Gaga slams Trump over shutdown, Pence over LGBTQ rights

According to Variety, Gaga brought Bradley Cooper, her co-star from the Oscar-nominated film, onstage at the Park Theater for a live performance of their hit song, "Shallow."

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Fans cheered as the pair sang the duet, an Academy Award nominee for best original song. Cooper and Gaga also were nominated in the best lead actor and actress categories, respectively.

15 things to do in metro Atlanta this weekend

Kentucky Derby parties, Free Comic Book Day, Mutt Gala, May the Fourth Taco Fest and a rodeo top things to do this weekend in metro Atlanta.

Stay well, ATL: 5 must-do wellness events in May

Check out five wellness events happening around metro Atlanta this May, from a floral-filled festival in Buckhead to outdoor yoga sessions at Ponce City Market.

Native American actor helps make ‘Peter Pan’ take flight

Interview with Atlanta actor Bailey Frankenberg, who brings physical prowess to the updated character of Tiger Lily in "Peter Pan," coming to Fox Theatre.

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They voted for Trump and now their son is in ICE detention

A green card holder from Argentina is detained in South Georgia’s Stewart Detention Center. His parents, who voted for President Trump, now regret their choice.

He’s out: Man accused of trying to kidnap child at Cobb Walmart posts bail

A man accused of trying to snatch a 2-year-old boy from his mother’s arms at a busy Walmart was granted bond after spending 45 days in jail.

Kemp will not run for U.S. Senate, igniting a GOP scramble in Georgia race

The governor’s decision reshapes one of the nation’s top Senate contests against Democrat Jon Ossoff.