MOMENT: @celinedion [1] singing along with @cher [2] backstage at @BBMAs [3] #bbma [4] #cher [5] #CelineDion [6] pic.twitter.com/6ptcUOfUx4 [7]

— Frank Elaridi (@frankelaridi) May 22, 2017 [8]

If you thought Céline Dion's most epic moment at the Billboard Music Awards on Sunday night was her heartbreaking rendition of "My Heart Will Go On" [9] . . . you'd be right. BUT her time backstage is a close runner up. After nailing her performance, Céline stepped off the stage and watched Cher belt out "Believe," [10] which she couldn't help but softly sing and dance along to herself. Journalist Frank Elaridi shared footage of the moment on Twitter [11], and honestly it's so damn cute. Even the music industry's biggest talents can still have a fangirl moment [12] or two, right?