Amy Winehouse On 'Fantastic Form' At Secret London Gig

Amy Winehouse played a secret comeback gig in London on Sunday night (June 12).

The singer played at the 100 Club, performing such tracks as 'Back To Black' and 'Rehab'.

A source told The Sun: ''Amy was on fantastic form. She looked and sounded great. It was like one of her old performances. She had the crowd laughing along with her gags, poking fun at herself and dad Mitch. She also threatened to flash her boobs and made a few jokes about her voluptuous look."

Winehouse embarked on a treatment programme at Priory Clinic in London last month.

The singer is scheduled to play a series of European festival dates this summer, starting at Kalemegdan Park in Serbia on June 18.

Other gigs are set to take place at BBK Live in Spain and Sziget Festival in Budapest.

Amy Winehouse - Through The Years