Lily Flexes Her Jaw

Lily AllenThere are a number of possibilities for Lily Allen's wide-mouthed pose.

But if your first guess is to think she's ranting at someone...

Hush down, because Lily's doing nothing of the sort.

In fact, we reckon we may have uncovered a secret new celebrity pastime, so listen closely.

It's called the ancient art of joga, which we like to think of as yoga - for the jaw.

While the practice of stretching one's jaw is commonly known as yawning, we think joga has a nicer ring to it.

Ms Allen was snapped outside her home in London, and what with her new telly show - Lily Allen And Friends - on the go, we reckon she must be exhausted.

A spot of joga is a great way to unwind and let all your sleepy frustrations out.

See which other celebrities have been snapped practising joga, or, um, yawning.