Surprise! Karen O announces pregnancy by showcasing her prominent bump at the Rock and Roll Hall of Fame in Cleveland 

Karen O announced her pregnancy Saturday by showcasing her prominent bump at the Rock and Roll Hall of Fame Induction Ceremony in Cleveland.

The expecting 36-year-old donned a maternity mini-dress beneath her 'Zero' studded leather jacket by designer Christian Joy, and leopard-print booties.

The Yeah Yeah Yeahs frontwoman sported her signature red lipstick, cat eye-liner, and fringed bob cut by hairstylist Seiji Uehara. 

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O baby! Karen O announced her pregnancy Saturday by showcasing her prominent bump at the Rock and Roll Hall of Fame Induction Ceremony in Cleveland

O baby! Karen O announced her pregnancy Saturday by showcasing her prominent bump at the Rock and Roll Hall of Fame Induction Ceremony in Cleveland

Leather mama-to-be! The expecting 36-year-old donned a maternity mini-dress beneath her 'Zero' studded leather jacket by designer Christian Joy, and leopard-print booties
Leather mama-to-be! The expecting 36-year-old donned a maternity mini-dress beneath her 'Zero' studded leather jacket by designer Christian Joy, and leopard-print booties

Leather mama-to-be! The expecting 36-year-old donned a maternity mini-dress beneath her 'Zero' studded leather jacket by designer Christian Joy, and leopard-print booties

She's got that glow! The Yeah Yeah Yeahs frontwoman sported her signature red lipstick, cat eye-liner, and fringed bob cut by hairstylist Seiji Uehara

She's got that glow! The Yeah Yeah Yeahs frontwoman sported her signature red lipstick, cat eye-liner, and fringed bob cut by hairstylist Seiji Uehara

Karen - born Orzolek - will welcome her first child with her husband of four years, director Barnaby Clay.

Barney helmed her Brooklyn band's music videos for Zero and Skeletons as well as clips for Depeche Mode and Gnarls Barkley.

The four-time Grammy nominee previously romanced Oscar-winning screenwriter Spike Jonze and Liars frontman Angus Andrew.  

Parents to be! Karen - born Orzolek - will welcome her first child with her husband of four years, director Barnaby Clay (pictured in 2014)

Parents to be! Karen - born Orzolek - will welcome her first child with her husband of four years, director Barnaby Clay (pictured in 2014)

Congrats! Barney helmed her Brooklyn band's music videos for Zero and Skeletons as well as clips for Depeche Mode and Gnarls Barkley (pictured in 2014)

Congrats! Barney helmed her Brooklyn band's music videos for Zero and Skeletons as well as clips for Depeche Mode and Gnarls Barkley (pictured in 2014)

While at the Ohio induction, the Rapt rocker performed a tribute cover of the late Lou Reed's 1973 glam rock anthem Vicious.

The Velvet Underground frontman's widow Laurie Anderson accepted the honour since he succumbed to liver disease at age 71 in 2013.

Karen was joined onstage Public Hall by her Yeah Yeah Yeahs guitarist Nick Zinner for the musical memorial.  

Performing pregnant: The four-time Grammy nominee previously romanced Oscar-winning screenwriter Spike Jonze and Liars frontman Angus Andrew

Performing pregnant: The four-time Grammy nominee previously romanced Oscar-winning screenwriter Spike Jonze and Liars frontman Angus Andrew

'Oh baby, you're so vicious!' While at the Ohio induction, the Rapt rocker performed a tribute cover of the late Lou Reed's 1973 glam rock anthem Vicious

'Oh baby, you're so vicious!' While at the Ohio induction, the Rapt rocker performed a tribute cover of the late Lou Reed's 1973 glam rock anthem Vicious

'Me and @little_vampire will be there to sing a song in his honor!' Karen was joined onstage Public Hall by her Yeah Yeah Yeahs guitarist Nick Zinner (L) for the musical memorial

'Me and @little_vampire will be there to sing a song in his honor!' Karen was joined onstage Public Hall by her Yeah Yeah Yeahs guitarist Nick Zinner (L) for the musical memorial

Living legends: Backstage, the biracial Oscar nominee got to mingle with her mentor, legendary punk poet Patti Smith, who delivered a stirring speech about Reed

Living legends: Backstage, the biracial Oscar nominee got to mingle with her mentor, legendary punk poet Patti Smith, who delivered a stirring speech about Reed

Backstage, the biracial Oscar nominee got to mingle with her mentor, legendary punk poet Patti Smith, who delivered a stirring speech about Reed.

Curiously, fans of the Crush Songs singer didn't notice her bump when she belted Pinky's Dream at the April 1 David Lynch event at LA's Ace Hotel Theatre.

The Rock and Roll Hall of Fame Induction Ceremony - airing May 30 on HBO - also features Paul McCartney, Joan Jett, and Miley Cyrus. 

Bump in the night: Curiously, fans of the Crush Songs singer didn't notice her bump when she belted Pinky's Dream at the April 1 David Lynch event at LA's Ace Hotel Theatre 

Bump in the night: Curiously, fans of the Crush Songs singer didn't notice her bump when she belted Pinky's Dream at the April 1 David Lynch event at LA's Ace Hotel Theatre 

Star-studded telecast: The Rock and Roll Hall of Fame Induction Ceremony - airing May 30 on HBO - also features Paul McCartney, Joan Jett, and Miley Cyrus

Star-studded telecast: The Rock and Roll Hall of Fame Induction Ceremony - airing May 30 on HBO - also features Paul McCartney, Joan Jett, and Miley Cyrus

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