M.I.A. Photo by: Michael Buckner / Getty
Pregnant M.I.A. to Rap at Grammys – On Her Due Date | M.I.A.
Rapper M.I.A. had better add one more person to her Grammy entourage – a doctor.

The pregnant hip-hop star, who is nominated for two awards, is scheduled to perform at the ceremony Sunday, which is also her due date.

"They say that you're often late the first time, so I'm planning to go," the mom-to-be, 31, who is engaged to musician Benjamin Brewer, tells USA Today. "We'll see. People are trying to get me to relax and focus on the baby. It's like being in parallel universes."

Other newly announced performers include nominees John Mayer and Keith Urban, who will take part in a musical tribute to the late Bo Diddley.

The show will also feature a duet from Miley Cyrus and Taylor Swift, as well as performances by U2, Justin Timberlake and Rihanna.

Several recent headline-makers have joined the list of presenters: nominee Natalie Cole, who recently spoke about her need for a kidney transplant, newly engaged actress-singer Zooey Deschanel (her fiancé is singer Ben Gibbard from Death Cab for Cutie and the Postal Service), and plane-crash survivor Travis Barker, who will take the stage with a reunited Blink 182.

The 51st Annual Grammy Awards will be broadcast live from the Staples Center in Los Angeles on Sunday at 8 p.m. on CBS.