Last night, British rapper MIA marked her baby's due date by performing at the Grammy Awards.

Did the controversial 31-year-old singer sport traditional maternity wear? Nope -- she rocked the stage in a daring sheer number with strategic polka dots that exposed most of her baby bump.

MIA performed with TI, Jay-Z and Lil Wayne on the album "Swagga Like Us," which samples her hit "Paper Planes;" the album won a Grammy for Best Rap Performance by a duo or group.

Despite her bold fashion move, in previous interviews MIA admitted she was worried her performance might induce labor.

"When I read these books on childbirth, they are like, 'If you want to induce labor, try having a game of arm wrestle with your friend,'" said MIA.

"I am like, 'Oh my God, my option isn't an arm wrestle -- it's like being onstage and with Jay-Z and Lil Wayne and Kanye and TI.' To me, that is really exciting, to be a nine-month pregnant woman," she added.

MIA has been getting loads of attention lately -- in addition to her Grammy nod, she was nominated for an Oscar for her song "O Saya" from the film Slumdog Millionaire, which she co-wrote with AR Rahman.

"It was literally like day by day, you know somebody is like 'You have been nominated for a Brit Award,' and then it was like 'You are nominated for an Oscar' and it was like...I was just really confused by it all," said MIA.

Despite her impending due date, the rappin' mom-to-be is working on a new album as well as producing a new artist, Rye Rye.

MIA says she doesn't know the sex of her child but calls it "he" anyway -- and she says her baby already loves her music.

"Every time I go for an ultra scan, the baby is like in crazy positions with legs star-shaped and stuff. It's not like in a baby position at all," she said. "I feel like he is used to bass lines and beats and receptive to that, which is cute."

Talk about a hard-working mom! Would you dare perform on your due date? In that dress?