Mike Myers to Be a First-Time Dad
05/13/2011 AT 09:00 AM EDT
This will be the couple's first child, and Tisdale, who was recently spotted sporting a bump in New York City, is already in her second trimester.
"We are overjoyed," the couple said in a statement.
Myers, 47, and Tisdale wed last fall – but managed to keep their big day a secret until March. The couple began dating in 2006 after Myers split from his wife of 12 years, Robin Ruzan. They had no children.
The New York Post was the first to report the pregnancy.
Reporting by JULIE JORDAN