Kate Hudson, Matt Bellamy son named Bingham Hawn

Matthew Bellamy has revealed the name of his newborn son.

The Muse singer tweeted the news on Wednesday after his fiancée Kate Hudson gave birth to the couple's first child on Saturday night.

"So happy! Just had a baby boy, Bingham 'Bing' Hawn Bellamy," he wrote.

Bellamy went on to say that both Hudson and the baby are doing well.

"Mum and baby are strong and healthy. Mum was a warrior, Bing popped out after 4.5 hours of intense pushing!" he added.

The couple, who confirmed in April that they were now engaged, reportedly only settled on the name yesterday, according to Us Weekly.

This is the second child for the Bride Wars star, who already has a 7-year-old son named Ryder with ex-husband Chris Robinson.

The boy's middle name 'Hawn' is in honour of Hudson's mother, actress Goldie Hawn.

Earlier this week, the pair encouraged their friends and family to donate "celebration trees" instead of giving baby gifts.