The singer was completely caught off guard when Gwynnie name-dropped the Cardi B hit.
Staff members working on the US talk show alleged last year that they faced racism, sexual harassment and other workplace misconduct.
Nikki finished third behind Justin Guarini and Kelly Clarkson on the first season of the reality TV show.
"What I’m dealing with is hard — it involves more than just my heart, it involves a lot of little hearts.”
The singer has teamed up with Kelly Clarkson on a new version of the track which emphasises the need for consent.
Their new recording of the festive classic will emphasise the importance of consent.
The singer’s entire back catalogue was acquired by pop manager Scooter Braun earlier this month.
She opened the Billboard Music Awards with a powerful speech.
The ceremony takes place on Sunday night.