One Direction members catch chlamydia Down Under?

Harry and Liam both got weed on by a koala when the band stopped off at a sanctuary in Brisbane for a photo op with the cuddly creatures.

Eighty per cent of koalas carry chlamydia, so the lads have been warned that there's a chance they may have picked something up "down under".

"I'm genuinely scared," The Sun quoted 18-year-old Liam as saying. "This is worrying. I’d have never picked the thing up if I’d known."

But Harry isn't letting the risk of a marsupial-borne STD get in the way of his love life.

The Casanova of the band broke a million little girls' hearts when he was snapped pashing US model Emma Ostilly on a date in Auckland at the weekend.

An onlooker told the Daily Mirror, "They really seemed to have a connection and only had eyes for each other … They were enjoying themselves, laughing and joking together."

Meanwhile, Liam and Louis Tomlinson were the two band members brave enough to have a go at bungee jumping off Auckland's Sky Tower yesterday.

Tattoo-lover Zayn tweeted this pic of his new ink. It's covered up in the photo, but the neck tatt is rumoured to be a New Zealand silver fern.