Alfie Allen's and Jaime Winstone Engaged

Lily Allen has let slip that her brother Alfie may be about to get engaged to girlfriend Jaime Winstone.

The singer was co-hosting the GQ Men of the Year Awards in London on Tuesday (02Sep08) night when she welcomed Ray Winstone's actress daughter onto the stage, telling the shocked audience, "Introducing my soon-to-be-sister-in-law, Jaime Winstone."

Despite Winstone pleading with the singer to stay quiet, Allen then yelled, "Show off your rock (ring), show off your diamond."

Alfie Allen, 21, has been dating the 23-year-old since last year (07)