Zayn Malik is the only member of One Direction not to congratulate Niall Horan on his new solo single.

Zayn Malik's Instagram post

Zayn Malik's Instagram post

Zayn quit the boy band in 2015 before the rest of the group - Niall, Harry Styles, Louis Tomlinson and Liam Payne - took a hiatus at the start of this year.

They are all working on their own projects and after Niall announced yesterday (29.09.16) that he had released his debut song 'This Town', Harry, Louis and Liam were quick to show their support.

Louis wrote: "Feeling super proud @NiallOfficial . You sound great ! Great to see you at your bday bash!!,@ while Harry said: "Ahhh, a lovely tune my friend. Congratulations. H."

And Liam tweeted him to say: "good luck boss give him all your support huge day for him proud of you boss (sic)"

But Zayn, 23, remained silent on social media about the song and instead took to Instagram to show off his new hair cut and freshly shaven face.

But Niall didn't seem too concerned about the apparent snub and instead thanked everyone else for their support.

He wrote on Twitter: "What a day today was ! Can't believe the reaction. Crazy s**t !! Celebrating with a beer (sic)"

He later said: "Lying in bed looking at your comments about the song . It's really cool to see what you think n stuff . Thank you."