Former SPICE GIRL Geri Halliwell is reportedly expecting a baby with her secret lover, British scriptwriter Sacha Gervasi.

The 33-year-old singer has been dating Gervasi, who wrote hit movie The Terminal, since June (05), and is delighted at the prospect of becoming a first-time mum in the spring (06).

A pal says, "Geri is thrilled to be pregnant.

"Although it is totally unexpected she can't wait to be a mum.

"It's the best thing that could happen to her."