Isla Fisher on how she smuggled Ali G into the Oscars

Actress Isla Fisher credits tight leggings with helping her smuggle husband Sacha Baron Cohen's Ali G persona into the Oscars.

The 44-year-old British comedian caused an uproar when he presented at the 88th Academy Awards last month (Feb16) in character as the classic fictional troublemaker alongside Olivia Wilde.

It's claimed Sacha was warned not to pull any stunts at the show by Oscars producers, but Isla reveals she helped her other half make it happen anyway.

"When you have to fit giant glasses, a beard, a hat, a glove and makeup into Spanx (leggings), you have to wear a wide dress," she tells Entertainment Tonight of how her glamorous outfit was tailored to smuggle the Ali G costume into the event. "Let's just say I wasn't comfortable with sitting down."

Isla and Sacha have had quite an eventful week promoting his new film Grimsby, which reaches theaters 11 March (16).

The couple found themselves randomly watching the movie with Courteney Cox and members of the Kardashian family earlier this week (endsFri4Mar16), including Kim Kardashian, her husband Kanye West, Kourtney Kardashian, matriarch Kris Jenner and Kris' boyfriend Corey Gamble.

"I guess Sacha, my husband, asked our friend Courteney if, because the movie was very English, if she knew any average American families that could see the movie and give us some tips," Isla recalls of how the sudden Kardashians movie night came to be - noting she had never met them before the get-together took place. "Then smash cut, there are the Kardashians!"

Out of everyone in the Kardashian family, Isla believes Corey got the biggest kick out of Grimsby.

"Maybe Corey!" she recalls of who had the strongest reaction while watching the film. "Because Corey turned around. Kanye just hid his head at one point, which was really funny."