Justin Bieber asks fans to help him find Instagram beauty

Justin Bieber has called on his millions of fans on social media to help him track down a mysterious female on Instagram.com.

The Sorry singer took to the app on Tuesday (08Dec15) and re-posted a selfie of a dark-haired beauty with green eyes, and simply wrote, "Omg who is this!!"

Clever fans helped Justin identify the brunette, who is a popular Instagram user called Cindy Kimberly, according to Us Weekly.

Since Justin's post, Cindy updated her Instagram biography to read, "Thank You Justin", and her YouTube.com channel garnered more than 3,000 new subscriptions.

In recent weeks, Justin has also used the popular photo sharing app to post throwback photos of him and his ex-girlfriend Selena Gomez, leaving fans wondering if they were striking up a relationship again.

However, the Good For You singer has been spotted spending time with One Direction's Niall Horan, leading many to believe she's struck up a new romance with the Irish pop star.