Margot Robbie stops tattooing friends after a bridesmaid ended up with a 'scabby' tattoo before wearing a backless dress down the aisle.

Margot Robbie has revealed that she’s no longer giving her friends tattoos, after leaving one of her loved ones in an unsightly state ahead of a big wedding.

The 29-year-old actress has disclosed that the ‘particularly bad’ moment occurred after she travelled back to her native Australia for a friend’s wedding and decided all at the bachelorette party should get matching tattoos, which she administered.

Speaking during an appearance on The Tonight Show Starring Jimmy Fallon on Tuesday, she recalled: ‘I’m tattooing my friend on her back… And then when I showed her afterwards, she was like “Oh, I didn’t know that’s what I was getting.”

Tattoo gun: Margot Robbie revealed Tuesday that she’s retired her tattoo gun after a ‘few mishaps’ during an appearance on The Tonight Show Starring Jimmy Fallon

‘And I was like, “Oh, god.” I was like, “What did you think you were getting?” She was like, “It doesn’t matter, like, I like it either way.”

‘And I was lucky she was cool about it, but do you know who was not cool about it? Her mom, the next day at the wedding, when she walked down the aisle, as one of the maids of honor in a backless dress, and this like, red, raw, scabbing tattoo.

‘And her mom was filthy with me… She was so angry, and I felt, I really shouldn’t do this any more.’

New movie: The 29-year-old Australian actress made the disclosure while promoting Birds Of Prey on the NBC talk show. Pictured with host Jimmy Fallon

As a result, Margot, who has treated numerous friends to tattoos over the years decided it was time to move away from her favoured pastime.

She told 45-year-old TV personality Jimmy: ‘I’ve hung up the tattoo gun. I don’t do it anymore. I had a few mishaps and I feel like I should quit.’

The Bombshell actress received a tattoo gun several years ago from a friend, who had purchased it on eBay.

She tattooed her Suicide Squad director David Ayer and also inked the cast and crew with ‘SKWAD’ tattoos.

Game time: Margot also competed against Jimmy in a game of Know It All, moderated by announcer Steve Higgins

During her chat about body inkings, the stunning screen star also revealed that she had given herself a tattoo on her foot.

The Oscar-nominated actress looked sensational for her appearance on the popular NBC show, stepping out in a light blue jumpsuit with a deeply plunging neckline.

She also talked about Birds Of Prey explaining the set up after her character Harley Quinn breaks up with the Joker.

She said: ‘Harley is the narrator in the film, and so she tells you that, you know, it was all on her terms and she’s totally fine with it and really she’s not.

Starring role: She also talked about Birds Of Prey explaining the set up after her character Harley Quinn, shown in a scene from the film, breaks up with the Joker

Tender moment: Harley buys a hyena and shares a Twizzler with it in the movie

‘Then she goes through the usual stages of a break up, you know, crying into a pint of ice cream, getting drunk and cutting her hair, blowing up Ace chemicals, you know, all the usual.’

Margot also is a co-producer of Birds Of Prey after pitching the film to Warner Bros. in 2015

‘It’s been a long time in the making and now we’re finally going to show it to the world. So, I hope you like it it was really fun to make and I think it’s really fun to watch,’ she said.

Birds Of Prey will be released in theaters in the US and UK on Friday.