Sir Elton John and Lily Allen bust up at the GQ Awards.

The legendary performer, 61, and the "Smile" singer were there to host the awards ceremony, but as the night progressed, Allen became increasingly more interested in the free champagne than presenting the awards.

At one point, she stumbled over her cue, to which Elton leered, "Are you going to have another drink?" Allen rolled her eyes and responded, "F**k off, Elton."

The final straw seemed to be when the 23-year-old singer insulted Elton's age, to which he shot back, "I could still snort you under the table!"

Image WENN