When the former teen pop star Billie Piper was last on the programme she was about to sit her GCSEs. Now she's all grown up and a fully-fledged actress.
Billie's performance in the television version of The Miller's Tale won acclaim and now she's about to appear in Bella and the Boys, a hard-hitting drama about life for a teenager in a care home.
And critics of her marriage to Chris Evans said it would never last, but they've already clocked up nearly three years together.
Billie joins Martha to talk about how her life and career as an actress. Bella and the Boys, BBC2 Sunday 15 February