Kate Hudson is ready to start a family with her rocker boyfriend, Matthew Bellamy, a source confirms to PEOPLE.
"They couldn't be more excited," the source says of Hudson's being pregnant. "Kate is really happy. She was always excited to have kids again at some point."
The actress, 31, who has a son, Ryder, 7, with ex-husband Chris Robinson, has been dating Bellamy, 32 – the British frontman for the rock band Muse – for about nine months.
Last summer, early in their relationship, Hudson called Bellamy "lovely," and said that the two were "just learning about each other and it's wonderful."
She added: "I do believe in love. I believe that when you really open yourself up to love, it's the most beautiful thing."
In a 2007 interview, Hudson talked about how motherhood had changed her whole outlook on life. "You realize after you have had children that you'll never love anything more than your child," she said.