The actress took to Twitter.com to share a sweet picture of herself and her husband on a beach, with the mum-to-be cradling her growing baby bump while leaning on Dave's shoulder.

Odette, who also turned 30 on Sunday, added the caption, "Happy Mother's Day! This year, I'm SO happy to announce that I get to join the party!", while Dave also retweeted the announcement, and added, "It's out! I can now wish my beautiful wife a very happy birthday AND a Happy 1st #MothersDay! Me and #babyannable are so lucky to have you."

The couple wed in 2010.