Nicki Minaj, who hit the American Idol stage with a mermaid-inspired dress and blonde wig, hinted at becoming a guest judge on the hit Fox show ... but not sure if Jennifer Lopez is havin' it!

After performing her song "Starships" and coming close to a few wardrobe malfunctions, Minaj told Lopez, “J.Lo, can you scoot over a little bit and let me get up there?”

JLo responded, "I don’t know if there’s room for both of us up here.”

Ouch! Let's hope she was kidding. Nicki's new album, Pink Friday: Roman Reloaded, hits stores next Tuesday!

In case you missed Ms. Lopez's outfit last night, feast your eyes on the sexy photo below!

Jennifer Lopez american idol skirt legs singer