Winehouse in Surprise Appearance in London

9/5/2007 1:37 PM PDT
Despite canceling her North American tour, Britwreck Amy Winehouse isn't giving up performing -- she unexpectedly popped up at the Mercury Music awards in London last night.

Winehouse, who had been "holidaying" with her hubby in St. Lucia instead of going to rehab, performed an acoustic version of "Love Is a Losing Game" before losing out on the top prize to the Klaxons -- and it was amazing.

She should've gotten a prize just for showing up.