A lighter look – in pictures

You put your right leg in … London mayor Boris Johnson shows how it's done at a new community sports ground at Streatham-Croydon rugby club in London Photograph: Julian Makey/Rex Features

Let's hope the school gates are wide enough. A pram equipped with car wheels at the Skoda car booth during the Frankfurt motor show Photograph: Frank Augstein/AP

'For my next trick, I'd like to make a member of the audience disappear.' Russian president Vladimir Putin, second right, blankets Germany's chancellor Angela Merkel during the G20 summit at Peterhof Palace in St Petersburg Photograph: Alexander Zemlianichenko/AP

Thank goodness it's not a guide dog: a Komondor, a traditional Hungarian guard dog, shakes its long mop-like fur during a show in Bodony, north of Budapest Photograph: Laszlo Balogh/Reuters

Yes sir, we take credit cards: Prince William and Prince Harry answer the phones at Canary Wharf during the BGC Charity Day 2013 Photograph: Chris Jackson/Getty Images

Laughing like, err, hyenas? Two endangered Asiatic lions share a joke at Dudley zoological gardens, West Midlands Photograph: Jason Skarratt/Rex Features

Fault! Now you see him … Novak Djokovic struggles to change his shirt during a match at the US Open Photograph: Emmanuel Dunand/AFP/Getty Images

Bobby in a beanie. A policeman cunningly disguises himself with a Rihanna hat to infiltrate a crowd of fans at the launch of the Rihanna for River Island fashion collection in London Photograph: Samir Hussein/Getty Images

All clear ahead, then. A woman poses in a car made of glass on display at the Frankfurt motor show in Germany Photograph: Frank Augstein/AP

Oh dear, the perils of doing your hair and lipstick while in the back of a fast cab. A model walks the runway at the Thom Browne fashion show in New York Photograph: Joe Kohen/Getty Images

It'll be all white on the night - models backstage at the Thom Browne show in New York Photograph: REX

Dog basket with a difference – a pampered pooch yawns as he is ridden through the streets of Berlin Photograph: Markus Schreiber/AP

Shadow play - Serena Williams, (left) and sister Venus during their match in the women's doubles, round 3 match at the US Open at Flushing Meadows Photograph: Tim Clayton/Corbis

Two heads, they say, are better than one - a model on the catwalk during the Charlie Le Mindu show, Vienna Fashion Week, Austria Photograph: Rex Features

Postman required - must own snorkelling gear. Residents of Sonning-on-Thames in Berkshire have been left perplexed after a post box appeared in the middle of a bridge over the river. According to the Royal Mail the appearance of the red frontage is just as much of a mystery to them … Photograph: Geoffrey Swaine/Rex Features