How do you measure your ring finger? It's a question you may never have asked yourself before, but come wedding- (and engagement-) time, it will be crucial.

Thankfully, the clever chaps at Astley Clarke have taken all the trouble out of it.

HOW TO BUY AN ENGAGEMENT RING

Ladies, you can request your free ring sizer, which will conveniently be sent straight to your home. The idea is to take this little plastic strap, fashion it into a ring and adjust it as needed. The measurements you need are just on the side.

And for the gents, there is a handy little guide, too. This one is printable and simply requires you snaffle a ring of your beloved and match it up with the circles on the paper. (Just make sure you borrow a ring she actually wears, not one she's left forgotten in her jewellery box because it is ill-fitting…)

ENGAGEMENT SELFIE RULES

See? Simple.

The British luxury brand have made a nifty little video, which we've pinched for your reference, below. 

A word of caution: Different brands vary slightly on sizes, but this is the perfect place to begin.

Astley Clarke;  www.astleyclarke.com