Canadian Grand Prix - in pictures

Red Bull's Sebastian Vettel heads the pack as they begin the grand prix behind the safety car Photograph: Stan Honda/AFP/Getty Images

Vettel's team-mate Mark Webber tangles with Lewis Hamilton early on Photograph: Paul Gilham/Getty Images

The incident pushes Hamilton wide – and briefly turns Webber the wrong way round – allowing Jenson Button to nip up the inside Photograph: Tom Boland/AP

Fernando Alonso drifts wide as his team-mate Felipe Massa looks to take advantage Photograph: Nicholas Kamm/AFP/Getty Images

As the rain continues to pour, Hamilton nose-dives up the inside of Button on the straight. But Button doesn't realise he's there (or decides to ignore him) and holds the driving line ... The two collide forcing Hamilton to retire Photograph: Paul Gilham/Getty Images

The rain is getting ridiculous ... Vettel is still leading but visibility is dangerously low Photograph: Valdrin Xhemaj/EPA

The race is brought to a halt by the organisers and the cars are covered up on the grid Photograph: Paul Chiasson/AP

The rain continues to fall for two hours as the sweepers try desperately to clear the track Photograph: Darron Cummings/AP

Singer Rihanna – complete with umbrella – enjoys the moment when a cameraman hits the deck Photograph: VALDRIN XHEMAJ/EPA

We're back underway at last - Vettel is still the leader, with Kamui Kobayashi's Sauber in second place Photograph: Reuters

After all this, Michael Schumacher is challenging near the front of the pack ... but Webber is giving him plenty of trouble, and Jenson Button is closing in on them both Photograph: Mathieu Belanger/Reuters

Vettel, who had led for almost the entire race, makes a mistake on the final lap and drifts wide allowing Button to scoot past. The Englishman was 21st not so long ago in this race and now he's taking the chequered flag! Photograph: Chris Wattie/Reuters

Button lifts the trophy on the podium after winning an action-packed race - surely one of the finest wins of his career Photograph: JUSTIN LANE/EPA