Stars who share barnets

Pictures of Rod Stewart and Penny Lancaster this week demonstrate that besides their similarly extrovert behaviour, they apparently also share the same hairdresser.

But stepping out on the red carpet with a hairly similar partner is not a new trend, as big-haired 1980s throwbacks Brian May and Anita Dobson show.

And look how happy Brad and Gwyneth were when they both sported matching locks. Or Mick and Bianca in their Studio 54 heydays.

Could it be a security thing? The knowledge that at least one other person loves you enough to copy your barnet? Well, you know what they say: the couple that blow-drys together, stays together.