One Direction heartthrob Niall Horan has revealed his admiration for sultry songstress Lana Del Rey after watching her perform live last night (September 25).

The Irish singer attended her concert at London's iTunes Festival yesterday (pictured below) and took to his official Twitter page after the show to tell his fans how impressed he was with her as an artist:

"Great night! went to see @LanaDelRey with @yasminechanel @darrenf1992 @eoghanmcdermo , what a singer! she is amazing."

Horan also chatted to BBC Radio 1's Nick Grimshaw live on air this morning and admitted that he has a busy day of promo ahead: "We've got loads of interviews all day so I'm just getting ready for it now actually."

When asked what the most common question he will be asked during the interviews today might be, he joked it's likely to be "are we actually friends".

The 'One Thing' sensation also said that spending long periods of time being interviewed can be tiring, but he can't really get away with sitting in the back and not speaking up: "Sometimes when you're in an interview and someone starts answering the first question, you're just like 'yeah, you keep going'!"

Listen to his Radio 1 interview below: