Singer Beyonce Knowles and her rapper husband Jay-Z are expecting their first child, US Weekly magazine reported on Wednesday.

The 29-year-old Beyonce was surprised to learn she is in her first trimester of the pregnancy. She had wanted to finish another album but was overjoyed, the U.S. magazine said.

One of the music world’s most influential and wealthy couples, Beyonce and Jay-Z, 40, whose real name is Shawn Carter, were married in a secretive ceremony in New York in 2008.

The rapper is set to release a memoir in November called “Decoded,” while Beyonce earlier this year completed a world tour promoting her 2008 hit studio album, “I am…Sasha Fierce.”

A representative for the couple could not be immediately reached.