Becky Lynch in wardrobe malfunction forcing Royal Rumble winner to cover exposed nipple and causing

WWE star Becky Lynch suffered an embarrassing wardrobe malfunction at the Royal Rumble after her boob popped out on live TV.

The Irish ace caused a network blackout after the nip slip during the first match of the historic pay-per-view in Phoenix, Arizona, US.

The gaffe happened around halfway through the opener, which champion Asuka won and retained her SmackDown Live women's title.

Social media was sent into a frenzy over the incident, with viewers left in shock and creating a stir across Twitter.

The 31-year-old seemingly struggled with her top throughout the bout.

She went on to win the women's Royal Rumble in a shock entry after replacing the injured Lana at the last minute.

One Twitter user said: "Did anyone catch, Becky Lynch's boob popping out?!

"That's why the screen went black."

WWE Royal Rumble 2019: Live-stream, UK start time, match card and TV channel for huge event

Another added: "Did Becky's boob pop out?

"Bc my screen blacked out a quick second and when it came back she was fixing her top #RoyalRumble"

And one said: "Black screen again... Becky's boob must have popped out #RoyalRumble"

ZestW