Ariana Grande Greeting Fans Outside BBC Radio Studios Leads Today’s Star Sightings

Pucker up people!

Pop princess Ariana Grande was met by a crowd of starstruck fans upon her arrival at BBC Radio 1 Studios in London.

Grande stopped to sign autographs and posed for selfies before she headed inside for her interview.

In other Ariana Grande news, she AND Justin Bieber both unfollowed one another on Twitter, and fans FREAKED out!

Guess what happened after that? They followed each other back again! Whew! The world can continue to turn.

Launch the gallery above to check out all of the photos of the celebrities in today’s star sightings gallery.