Amanda Seyfried says she regrets filming movies as a teenager ‘without her underwear’

Amanda Seyfried has opened up about regretting some of her earlier career choices - including filming scenes 'without her underwear' as a teenager.

The 37-year-old actress, who is best known for her roles in Jennifer's Body, Mean Girls, Les Misérables and the Mamma Mia series, recently reflected on feeling 'pressured' in her earlier years as an actress.

Talking to Porter Magazine Seyfried said: "Being 19, walking around without my underwear on - like, are you kidding me? How did I let that happen?

"Oh, I know why: I was 19 and I didn’t want to upset anybody, and I wanted to keep my job. That’s why."

Seyfried told the magazine that she wished she had made her start in film during a time when intimacy coaches were an on-set requirement.

The star is perhaps best known for her role as Karen Smith in the 2004 teen classic Mean Girls.

Karen is the dimmest member of the 'Plastics' squad, but did have one talent up her sleeve - she claimed to be able to predict weather patterns with her breasts.

In one famous scene, Karen reveals her unusual gift to protagonist Cady Heron, played by Lindsay Lohan: "It's like I have ESPN or something. My boobs can always tell when it's going to rain."

Although the line has become something of a fan favourite, Seyfried herself doesn't look back on the gag with fond memories.

Seyfried said: "I always felt really grossed out by that. I was like 18 years old. It was just gross."

Intimacy coaches were recently granted membership to the Screen Actor's Guild, with union president Fran Drescher praising their role in looking after actor's wellbeing in intimate scenes.

Drescher said: "Their value is immeasurable and the National Board is committed to bringing intimacy coordinators into the Guild’s family and ensuring they have the kind of benefits and protections other members already enjoy.

"This decision furthers our mission of making on-set safety an industry-wide standard and priority and welcomes other talented, dedicated workers to join us."

Although Seyfried seems to be a fan of their inclusion on sets, some other Hollywood big names aren't as keen.

Sean Bean suggested the coaches would ruin the atmosphere on camera and said: "I think the natural way lovers behave would be ruined by someone bringing it right down to a technical exercise."