The Boy In The Dress preview

Whatever you're planning to do on Boxing Day, make sure you're free at 6:55pm to gather the family around the sofa to watch a feel-good family drama that's perfect for this time of the year.

Billy Kennedy was nervous about working with Kate Moss

"I was a bit nervous about working with Kate Moss" says Billy Kennedy.

Jennifer Saunders interview

Playing a loopy language teacher is a dream for Jennifer Saunders - and that's just one of the absolutely fabulous projects she has on the go.

A young lad spots Kate Moss in a Vogue fashion spread and falls in love - with frocks. Twelve-year-old Dennis is fed up with everything after his parents split; could dressing up as "Denise" cheer him up? Yes, it turns out, in this sweet-natured adaptation of David Walliams's children's book (following previous Crimbo versions of his Gangsta Granny and Mr Stink).

OK, so Moss's cameo doesn't display any hidden thespian talents and everything is resolved extremely conveniently, but it aims to celebrate difference and individuality, which can't be too bad, given how our commercially-driven youth culture too often tells kids that there's a "right" way to look. And with Jennifer Saunders, James Buckley, Tim McInnerny and Walliams himself popping up among the grown-ups, there's enough here to keep kids and hungover adults amused.

Adaptations of David Walliams's teen-lit offerings have rapidly become a Christmas staple. The latest book to get a small-screen rendering is his debut - the story of 12-year-old Dennis, a small-town boy whose feelings of difference are crystallised by Kate Moss on the cover of a fashion mag. The title hints at Dennis's habit: it's probably the kind of thing to raise the blood pressure of your local Ukip candidate but it is also a story boasting warm-hearted inclusivity and lessons in tolerance and Christmas cheer.

Jennifer Saunders on her new role

Jennifer Saunders plays a French teacher with a student who dares to be different in David Walliams' latest comedy drama.