Maggie Gyllenhaal worried about accidentally exposing her breasts at the Screen Actors Guild Awards.

The 37-year-old actress - who looked stunning in a long-sleeved white Thakoon gown at the prestigious ceremony on Sunday night (25.01.15) - feared she could end up showing more than she intended as she stepped out in the low cut neckline on the red carpet.

The brunette beauty - who was inspired by 'The Addams Family' star Anjelica Huston to don the figure-hugging gown - told PEOPLE as she arrived at the Shrine Auditorium in Los Angeles: ''I hope that my t***ies stay inside my dress.

''I thought it looked like Anjelica Huston in 1979. That's what I was kind of going for.''

In contrast to the 'Secretary' actress' cleavage-baring dress, 'Game Of Thrones' star Natalie Dormer covered up in a watercolour-inspired, one-shoulder Naeem Khan gown.

The 32-year-old actress confessed she had opted for a more feminine style to contrast the ''hard, striking look'' she had sported at the awards a year earlier after shaving the left side of her head for her role in the 'The Hunger Games: Mockingjay - Part 1'.

She said: ''The SAGS was where I revealed my half-shaved head last year, which was a very hard, striking look, so I was looking for something soft to counter it.''

'Still Alice' actress Julianne Moore - who took home the award for Outstanding Performance by a Female Actor in a Leading Role - also turned heads in an emerald green Givenchy Haute Couture design by Riccardo Tisci.

The flame-haired actress - who also sported one of the designer's gowns to the Golden Globes earlier this month - admitted she felt ''very lucky'' to have worn two of his bespoke creations.

She said: ''Riccardo [Tisci] of Givenchy was designing my Golden Globes gown.

''And he was nice enough to do something custom. And he sent all these beautiful sketches, and we loved them so much. And we saw this green one as well, and we asked if maybe he would make another one for the SAG Awards, and he did. So that's how that came about. So I'm very, very lucky, to get to have worn two custom Givenchy gowns in a row.''