It's been a whirlwind last few days for the boys of One Direction!
Just yesterday, Harry Styles was spotted at a star-studded bash in London celebrating Fudge Urban's launch into American stores.
The hunky singer was at the Ace Hotel in London and ran into his ex-girlfriend at the bash!
Both Caroline Flack and Fudge's brand ambassador Lou Teasdale attended the swanky fashion party and spent some time with their former beau.
The British heartthrob left the party solo and was greeted by a swarm of screaming fans as he exited the posh hotel.
The singer took to Twitter to post a picture of him greeting her majesty and wrote, "I would [like] to thank @BritishMonarchy and of course queen Elizabeth for her invite to Buckingham palace yesterday evening."
Horan met with royalty for an annual reception honoring the Irish community.
The blonde crooner was dapperly dressed in a navy suit with a striped shirt—and yes, Horan's signature 'do was in full affect!
He excitedly posted several photos from the black tie affair and seemed to be having the time of his life!