AceShowbiz -

Rumors about Beyonce Knowles and Jay-Z's marriage being on the rocks have been swirling for some months now. An aspiring rapper and model named Liv recently added fuel to the fire by releasing a new track called "Sorry Mrs. Carter". To those who are not familiar with Liv, she's been accused by tabloids of being Jay-Z's mistress.

The song, which samples OutKast's "Sorry Mrs. Jackson", is basically an attack on Beyonce. In it, Liv claims Jay-Z wanted to sleep with her but she "never screwed" with him because she respected Bey. She also implies that Rita Ora once slept with the Roc Nation boss to further her career.

Elsewhere in the track, Liv criticizes Beyonce for being "ride and die til the very end" and says that the mother of one should tell her fans how she "really became a wife."

Liv has also released the track's accompanying music video. The nearly-four-minute clip mostly features the raptress putting on makeup and performing in front of the camera.

Beyonce and Jay-Z, who will wrap up their joint tour later this week, haven't commented on the song.