He's been linked with Princess Diana and Elle Macpherson but has always insisted he’s not interested in settling down.  And now, Bryan Adams announces, he's gonna be a father...at age 51.

The rock star  has surprised fans by announcing that his personal assistant Alicia Grimaldi, 31, is pregnant with his first child.

Miss Grimaldi, a Cambridge-educated brunette, has been in a secret relationship with Adams for the past two years. Their baby is due in May.

Speaking exclusively to the Daily Mail, her father, retired surgeon Peter Grimaldi, said that he and his wife Sylvia thought their daughter’s pregnancy was ‘fantastic news.’

The 66-year-old added: ‘It will be our first grandchild and, of course, we are all delighted for Alicia and Bryan.

I have met Bryan many, many times. He obviously has a huge fan club, me included. They are both very excited.’

Mr Grimaldi refused to comment on whether the pair had plans to marry, saying only, ‘that is a private matter’.

The couple met in 2004, when Miss Grimaldi helped the musician set up the Bryan Adams Foundation.