Sorry if AP

Demi Lovato expressed, on Twitter, her dream collaborations, some days ago: "Dream Collabs: Kelly Clarkson (duh), Eminem, Ed Sheeran, Marc Anthony, Christina Aguilera, Macklemore, Lil Wayne, Nicki Minaj, & Drake ����"

After that a bunch of fans suggested other collaborations and when Lady Gaga came up, here's her answer: "In a HEART beat but she probs hates me �� RT @gagasvato: @ddlovato bitch what about lady gaga bye"

She also said she'd love to collaborate with Britney Spears, Kelly Rowland, Paulina Rubio, Beyoncé and Rihanna!