Sofia Coppola expecting second child

By Peter Mikelbank, PEOPLE.com

Sofia Coppola, who has a 3-year-old daughter with partner Thomas Mars, is expecting her second child.

STORY HIGHLIGHTS

Director Sofia Coppola is expecting her second baby with partner Thomas Mars
Mars and Coppola have been together for four years and have a 3-year-old daughter
Coppola is currently in post-production on her first film since 2006's "Marie Antoinette"

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(PEOPLE.com) -- Director Sofia Coppola and partner Thomas Mars, the frontman for the band Phoenix, are expecting their second child, the rocker has confirmed.

In a backstage interview with Chicago's WRIT, the French-born musician, seemingly surprised, nodded affirmatively when asked about partner Coppola being pregnant.

Coppola, 38, and Mars have been together for four years, and have a three-year-old daughter, Romy. Coppola was previously married to director Spike Jonze.

"I heard the story that if you play Bach, [babies in the womb] get smarter," Mars said.

Asked if he would play music from his band's latest album, "Wolfgang Amadeus Phoenix," Mars joked: "We have to study it. Not sure it's a good idea."

Coppola, who lives in Paris, is currently in post-production on "Somewhere," starring Stephen Dorff and Elle Fanning. The film is her first since 2006's "Marie Antoinette."