Kate Hudson and Matt Bellamy keep their good news under wraps

Things are moving fast for Kate Hudson and Muse frontman Matt Bellamy.

After announcing Kate‘s pregnancy earlier this month, the couple are now reported to be engaged – celebrating the news with a family do in a London hotel.

‘It was an intimate party,’ says a source.

‘They kept their engagement secret as they wanted to celebrate with their nearest and dearest before it became public knowledge.’

Actress Kate, 31, who has a 7-year-old son with ex-husband Chris Robinson, has been dating Devonshire rocker Matt, 32, for about 10 months.

Kate‘s mum, Goldie Hawn, 65 – who was a guest on the British Comedy Awards last weekend – is thrilled she’s to became a gran again.

‘I’m excited,’ she told The Sun. ‘Happy for them both.’

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Esme Riley