One Direction are thrilled to have Zayn Malik back on tour with them.

The teen heartthrob pulled out of the band's support slot on Big Time Rush's North American tour last month to be with his family in the UK following the sudden death of his aunt but returned to the US earlier this week where his bandmates were delighted to welcome him back.

Harry Styles wrote on twitter: ''Off to a radio interview ... first show tonight with Zayn back ... It's gonna be fun :)''

He then posted a picture of a smiling Zayn, with the caption, ''Like he never left''.

Before meeting up with Harry and the other band members Louis Tomlinson, Niall Horan and Liam Payne, Zayn tweeted his excitement at rejoining the tour.

He wrote: ''Back in the US can't wait to see the boys hopefully they haven't missed me too much aha ! :D x x (sic)''

Following the news about Zayn's aunt, fans quickly started tweeting about the singer with the trending topic #StayStrongZayn created in his honour.

Although he didn't reference the death directly on his twitter page, Zayn did retweet a message from a fan which read: ''God has no Phone, but I talk to him. He has no Facebook, but he is still my friend. He does not have a twitter, but I still follow him. (sic)''