Kanye West previously defended his poker face, claiming that smiling is "uncool". But it looks like CEO dancers' Nqobile Danseur is one of a few people that can get the US rapper to show off his pearly whites.

Kim Kardashian's hubby, who is currently in London, caught up with the dance instructor over the weekend and not only did she get him to crack a smile, he even said hello to her friends in a short Instagram video.

Danseur captioned the short clip: "Just finished teaching a private Afrobeats Session at the #ArtsClub and guess who was watching upstairs #Kanye freaking West!"

In January, West revealed that a book he read from the 1800s while working on Yeezus, prompted his decision to stop grinning.

"I looked at all these people's photos and they look so real and their outfits were incredible and they weren't smiling and people, you know the paparazzi, always come up to me, 'Why you not smiling?' and I think, not smiling makes me smile," he said.

"When you see paintings in an old castle, people are not smiling 'cause it just wouldn't look as cool."

Unlike West, his reality star wife is more interested in warding off unwanted wrinkles.

Sharing a snap of her smiling and laughing with family friend Shamari Maurice, she told fans: "See I do smile... even laugh on occasion. Not too often though because it causes wrinkles @shammaurice."

Danseur, 26, is one third of the talented girl dance group, CEO Dancers, who were have worked with the likes of Lil Kim, Tiwa Savage, Wizkid, D'banj. Along with Ezinne Asinugo and Soliat Bada, they are Britain's Got Talent 2013 semi-finalists.