He's one fifth of one of the world's most popular boy bands, yet last night Niall Horan decided to go it alone.

The 18-year-old singer enjoyed a night out at celebrity hotspot Funky Buddha without his fellow band mates, but he didn't seem to be missing them.

As he helped two of his friends celebrate their birthdays, the Irish star was grinning from ear-to-ear and clearly loving his solo night out.

Having a great time: Niall Horan has a laugh outside Funky Buddha last night without his One Direct...

And a hello back to YOU, Harry!

The One Direction heartthrob Harry Styles was seen out and about around Londontown earlier today, opting to cover up his signature moptop hairdo!

Check out the One Thing singer (above)!!

Harry stopped to sign autographs and take pics with a few fans, as he made his way through the crowd!

Hey! Where are the rest of the 1D boys?? Shouldn’t they all berehearsing for the Olympics closing ceremony?? Or are the Spice Girlshogging the stage?? LOLz!

We wonder what they've...

Harry Styles has been spotted out with stunning model Cara Delevingne.

The One Direction singer likes a cougar and last year romanced Caroline Flack and DJ Lucy Horobin, but Burberry model Cara is only one year older than the 18-year-old hottie. 

Harry and Cara, 19, met at Mayfair club Le Baron earlier this summer and have now been snapped together in the singer's Range Rover leaving the exclusive Olympic VIP club at Omega House in London's West End.

'Lots of people saw them leaving together but...