"I would love to see Lady Gaga," Lovato said on Extra. "I don't know if that's possible or not."
It's certainly more possible now that Mother Monster has cancelled her tour due to a hip injury. She announced last week that she will need to have surgery to correct a tear in her right hip.
Gaga will need plenty of rest while recovering, and sitting on those big comfy judging chairs could be just what the doctor ordered.
"I have no idea what's gonna happen next season, and I don't think anybody does," Lovato told MTV News. "It's just crazy 'cause at the same time, just like L.A. is, I'm trying to build a career for my own too. It was an amazing experience and I loved doing this show. It's just, there's no way to tell.
Lovato has said she doesn't even know if she will return to X-Factor next season. In addition to Britney Spears' departure from X Factor, music exec L.A. Reid has said that he won't be returning as a judge either. With all that uncertainty, Lovato said there could be three new judges altogether.
Lady Gaga has not released a statement about being on X-Factor... as of yet.