Actress-turned-rock singer Taylor Momsen has revealed a frightening encounter while on tour in Mexico, after being bitten by what she described as a “massive spider”.

The former Gossip Girl star shared the incident on Instagram, explaining she was bitten while on tour with legendary rock band AC/DC.

“So it wouldn’t be an AC/DC tour if I didn’t get bit…” Momsen wrote.

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“This time a massive spider decided to take a chunk out of me and its venom did a number on my system.

“So had to have the wonderful doctors in Mexico come and deliver quite the shot before the show last night…add it to the list!

“Spider woman? Batgirl?”

Taylor Momsen had the encounter while on tour with legendary rock band AC/DC. Credit: Instagram/AAP

Taylor Momsen (far right) starred alongside Blake Lively and Leighton Meester in the hit series Gossip Girl. Credit: AP

Momsen then followed up the clip of a doctor giving her treatment, with pictures of her leg and the growing red mark on her leg from the bite.

“Hospital today, show tomorrow, poisonous spiders are NO BUENO but the show must go on, see you tomorrow Mexico City!” she added.

The singer later confirmed she had spent the night in hospital but was able to return to the stage, performing with her band The Pretty Reckless as the opening act for AC/DC during their final Mexico show.

She also shared a video from onstage thanking the medical staff who treated her.

This is not the first deadly incident Momsen has experienced while touring.

Two years earlier, also while on tour with AC/DC, a bat flew onstage and bit her leg, forcing her to undergo rabies shots.

She later turned the incident into an ongoing joke with fans, even creating an Instagram highlight titled “Batgirl”.