Kate Winslet's
the proud mom of a healthy baby boy! 

The actress welcomed her first child with husband Virgin Galactic businessman Ned Rocknroll on Saturday. Kate -- who tied the knot with Rocknroll last December -- will definitely be having a very happy holiday season and anniversary! 

A rep for the 38-year-old tells toofab, Kate gave birth on "Saturday, Dec. 7 at an NHS Hospital in Sussex County, UK," and that the "mother and baby are doing great." 

The "Revolutionary Road" actress has a daughter Mia, 12, with ex-husband Jim Threapleton, and son Joe, 9, with ex-husband Sam Mendes.

We can't wait to find out what the happy couple name their little guy. Click "Launch Gallery" below to see even more expecting stars!


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