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Break out the blue!

Kate Winslet has welcomed a baby boy with husband Ned Rocknroll, her rep confirms to People.

"Mother and baby are doing great," her rep tells the mag.

This is the first child for the A-list actress and Richard Branson's nephew, but the Titanic star has daughter Mia, 13, and son Joe, 10, from previous relationships.

The couple secretly married in December 2012 after over a year of dating.

The infant's name has yet to be released.

Congrats to the new parents!