It was the moment that seemed to stop the night, and the performance that sent the "A Star Is Born" co-stars trending (again) on social media.
Bradley Cooper and Lady Gaga took the stage during Sunday night's 91st Academy Awards to perform the movie's hit song, "Shallow," which was up for (and won) the Oscar for best original song.
The songs for all five contenders in the category were performed at the awards show.
In case you missed it the first time, or just want to watch it again, here is their performance:
