Los Angeles, Dec 21 : Singer Niall Horan is secretly romancing Victoria's Secret model Barbara Palvin.

The two have been seen together on a few occasions over the last month, but according to Niall's One Direction bandmate Louis Tomlinson's sister, they are now officially dating, reports contactmusic. com.

"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," said 13-year-old Felicite Tomlinson.

"Liam (Payne) said everyone has girlfriends here tonight except Harry (Styles) so yeah they're dating," she added.

Earlier this month Horan, 20, introduced Palvin also 20, to his bandmates at a party in London.(IANS)