Lavigne reunites with ex-husband Whibley?

Avril Lavigne has sparked speculation that she recently reunited with ex-husband Deryck Whibley after the pair were photographed leaving a party together in London.

Lavigne ended her three-year marriage to the Sum 41 frontman four months ago, citing "irreconcilable differences" in divorce papers.

The 24-year-old has since been romantically linked to a series of men including The Hills star Brody Jenner, Brandon Davis and actor Wilmer Valderrama.

However, Lavigne is now believed to have rekindled her relationship with Whibley after they were snapped sharing a car together following the Alice in Wonderland premiere in London last night.

The 'Sk8er Boi' singer, who wrote a song for the film's soundtrack, appeared on the red carpet alone at the start of the evening, but later left the after-party with Whibley.