Bellamy also revealed a few more details from the birth on Saturday: "Mum and baby are strong and healthy. Mum was a warrior, Bing popped out after 4.5 hours of intense pushing!"
It is the couple's first baby. Hudson, 32, has another son, Ryder, with her ex-husband Chris Robinson. Hudson announced her engagement to Bellamy, 33, last April during a "Today" show interview with Matt Lauer.