Justin Bieber is obsessed with Pokémon Go.

Justin Bieber

Justin Bieber

The 22-year-old singer and his pals are huge fans of the gaming app, which allows users to catch Pokémon in the real world, and managed to go largely unnoticed as they joined others on a Poké-hunt in Central Park in New York early on Monday (18.07.16).

Justin's friend Alfredo Flores posted a video of them on Instagram and wrote: ""When #Gyrados decides to pop up across the street from Central Park and all hell breaks loose! (sic)."

And Justin's manager Scooter Braun also shared the video and wrote: "This is amazing. @johnny lol. @justinbieber and @alfredoflores in nyc looking for Pokémon and no one looks at who is next to them (sic)."

Lily Allen is also obsessed with Pokémon Go' - and has been hunting for them at the Church of Scientology Celebrity Center in Hollywood.

The 31-year-old singer has become hooked on the mobile augmented reality game and has been spending as much time as possible catching the creatures while out and about.

Lily has been sharing her new passion with her fans on her Twitter page, keeping them up-to-date with her progress with the Pokémon.

The 'Smile' hitmaker spent Sunday (17.07.16) looking for Pokémon in Los Angeles and found herself drawn to the Church of Scientology Celebrity Center.

Posting a screen grab of her playing the game with the Scientology building on display, she tweeted: "Just at church #Sunday (sic)"

Lily - who has two daughters, Ethel, four, and three-year-old Marnie, with her estranged husband Sam Cooper - loves the Nintendo game because "Pokémon is pure escapism".