While Miley was attending in place of husband Liam Hemsworth as he recovers from kidney stones, Nick brought along new wife Priyanka Chopra Jonas.
“Miley didn’t cross paths with Nick or Priyanka all night,” a witness told US Weekly.
“She was off the carpet completely by the time they arrived, so there was no way she would have seen him.”
The singer’s dated briefly from 2006 to late 2007.
Meanwhile, Liam broke his silence surrounding his mystery hospitalisation on February 12, posting an Instagram snap of Miley, and his Isn’t It Romantic co-star Rebel Wilson at the premiere of the new rom-com.
Liam captioned the post: "Sorry I couldn’t make it to the @isntitromantic premier tonight guys. Been dealing with some pretty annoying health stuff the last couple days."