Kate Hudson and her fiance, Muse frontman Matthew Bellamy, welcomed a "healthy baby boy" on Saturday, Hudson's rep told People magazine.

Hudson, 32, announced her pregnancy in January. In April, she and Bellamy, 33, became engaged after dating about a year.

Hudson had not wanted to know the sex of her unborn baby, but had said -- mistakenly as it turns out -- she had a feeling it was a girl.

She has another son, Ryder Russell, 7, with ex-husband Chris Robinson of the Black Crowes. This is Bellamy's first child.

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