One Direction singer Liam Payne celebrates his 21st birthday today - and we have a feeling we know what his girlfriend Sophia Smith will be getting him as a present! Who would've guessed it would be man lingerie?

While being interviewed at the One Direction "You & I" perfume launch, Cosmopolitan asked Liam Payne if he would change himself for a girlfriend.

Liam was quick to respond: "No. If she doesn't take you for who you are then there's no point."

But he added that he likes it when girlfriend Sophia Smith chooses clothes for him.

"Sometimes I get Soph to do a bit of shopping for me, like, 'If you want to see me in anything...' So then she goes off to the lingerie section," Liam said.

Looks like Sophia likes to see Liam Payne in sexy man lingerie! And we think it's likely that this will be the perfect present for his 21st birthday.

We're glad Sophia knows how to make her beau feel sexy - as we previously reported, One Direction singer Liam Payne confronted comments by the media about his rumored weight gain by posting a heartfelt message on Instagram to his two million followers. Liam Payne said that his girlfriend Sophia Smith loves him even though he doesn't look like an "Olympic swimmer."

"Now just because I'm sick of seeing this everyday so I just want to clear up what the media do to people these days. Is it wrong to be normal? Or do I have to look like an Olympic swimmer just to get your approval into the cool kids or can I accept that the person I truly love thinks I'm the coolest kid in town anyway? Think I'll vote the second one ;) enjoy your day people," Liam captioned an Instagram photo of his healthy Body Mass Index (BMI).