Niall Horan officially dating Barbara Palvin?

It looks like One Direction's Niall Horan may be off the market, with reports claiming that the Mullingar man is officially dating Victoria's Secret model, Barbara Palvin.

The 20-year-old singer has been spotted with the Hungarian-born beauty on several occasions over the last month, prompting speculation that they are dating.

Now bandmate Louis Tomlinson's sister appears to have confirmed the news.

Writing on Ask.fm, 13-year-old Félicité 'Fizzy' Tomlinson said: "I haven't asked him, but when I was at X Factor [USA, earlier this week] Alberto from security said Niall's girlfriend Barbara was here.

"Liam [Payne] said everyone has girlfriends here tonight except Harry [Styles] so yeah they're dating."

Horan is believed to have introduced Palvin to his bandmates at a party in London earlier this month .