'Smash': Uma Thurman Sings As Marilyn Monroe (VIDEO)

Those questioning Uma Thurman's singing ability, this video is for you. The "Kill Bill" star, who also appeared in the movie musical version of "The Producers," recently joined the cast of "Smash" as Rebecca Duvall, the new star of the fictional Marilyn Monroe musical, "Bombshell."

Thurman's character replaces Megan Hilty's Ivy and Katharine McPhee's Karen in the fictional production. Now that "Bombshell" has its star -- and funding -- that doesn't mean everything will be smooth sailing.

In "The Movie Star" (Mon., April 16, 10 p.m. ET), look for Thurman's character to turn everything upside-down and butt heads with Derek (Jack Davenport). Karen and Ivy form an alliance to take down their new rival, and Julia (Debra Messing) reunites with her estranged husband to deal with a family crisis.

Check out the video of Thurman channeling Marilyn Monroe below.

"Smash" airs Mondays, 10 p.m. ET on NBC.