WATCH: Bradley Cooper and Lady Gaga get standing ovation after live performance of 'Shallow' at Oscars

Bradley Cooper and Lady Gaga took America by storm with their 2018 film "A Star is Born," and the song "Shallow" became an immediate hit.

The two stood slowly from their seats in the theatre and walked to the stage as the familiar guitar solo began to play. Cooper began to sing as Gaga stood beside a grand piano.

When she sat and began to play, the 128 caret Tiffany's diamond bounced on her décolleté as she belted the passionate notes of the love song.

Cooper put his standing microphone behind the piano and joined Gaga on the bench, where the two snuggled, sharing the microphone for the final notes.

After the broadcast went to commercial and the applause died down, the two walked back to their seats. It was then that the audience gave them another standing ovation.

Watch the video below: