Little Mix has had a right old year of it – numerous breakups ( RIP Jesy Nelson and Jake Roche's pure love ), way too many tears shed over unsuitable man-boys, then an absolute banger of an album, Glory Days, shaped by those very same experiences.

But the lasses are starting to embrace their new grown-up image, as encapsulated by this video of Leigh-Anne Pinnock accidentally confessing to an awkward sex story.

The foursome – Leigh-Anne on the far left along with Jesy Nelson, Jade Thirlwall and Perrie Edwards – were doing a live stream interview with Refinery29 when the reporter dropped a bombshell of a question on them.

(Image: Twitter/@colinshram)

"What is something you'd never do again?" she asked the band.

"Oh, I know exactly what I'd say but it's definitely too explicit," quipped Leigh-Anne.

The other girls crow with laughter as Perrie said: "Wow, you know, I've just thought of something as well."

(Image: Twitter/@colinshram)

"I know what you're thinking!" replied Jade.

"Haha, that's so funny," said Leigh-Anne.

But Jesy didn't get the joke, so asked Leigh-Anne to whisper it in her ear – but unfortunately there's a microphone right above them and it captured EVERYTHING.

(Image: Twitter/@colinshram)

"Anal," she confides in her BFF, as Jesy looks shocked then laughs.

After Leigh-Anne spills her never-again sex secret, Perrie butts in and tells the girls they've been caught out.

"Babe, you know there's a microphone right above your head?" she says in mock horror, while the rest of the band laugh.

Little Mix have a solid track record in interview gems - remember the time Jesy had issues trying to do a Jamaican accent? We never stop thinking about it.