One Direction’s Niall Horan celebrates 21st birthday WITHOUT Harry styles

Niall Horan had a super amazing birthday party to celebrate turning 21 but there was one very noticeable gap on the guest list-where on earth was [Harry Styles]{href='http://www.heatworld.com/shared/PageTemplates/Article/' target='_blank' rel='noopener noreferrer'}??

Despite some of his 1D band mates deciding to have a night in watching their boss Simon Cowell on The X Factor, Niall WAS joined by pal Louis Tomlinson and his cute girlfriend Eleanor Calder.

Niall was also joined by footballers Frank Lampard, Jamie Redknapp, John Terry and Ashley Cole to kick of celebrations at the v. swanky Shoreditch House.

Laura Whitmore, James Corden and Conor Maynard also rocked up, proving that Niall is a pretty popular lad.

Niall and the 1D boys are currently enjoying a bit of break (to celebrate birthdays and things) before jetting back to the US where they continue their Where We Are tour.