Nicki Minaj fans, known as the Barbz, have been sent into a frenzy today with rumours that a collaboration between the rapper and two previous collaborators – Ariana Grande and Doja Cat – is on the horizon.Back in May, Grande mentioned to Zane Lowe that she had a collaboration in the works with Doja Cat.“I was able to work with her earlier this year on this song that I want to save for whenever it’s time again to drop,” Grande said.“I remember when I first wrote it and sent it to her, she was in