The pop star also gives her best Celine Dion impression
the pop diva belted out her hits include 'Fighter' and 'Dirrty'
Singer overcomes voice changes, industry norms to rebirth career
the talk show host says Mariah Carey agreed to 'Carpool Karaoke' because of the late singer
Adele, Selena Gomez and more join for the sing-along
pop star twerks during segment
pop stars join late night host to sing their hits
