They reckon a smile is the most inexpensive way of changing your looks, and it probably is, but it can also reveal a lot about you.

One of the world's leading body language experts, Judi James, has teamed up with the AIB Everyday Rewards range of Spring offers to show how your smile displays your shopping habits. 

Judi has developed a guide to the range of smiles Irish shoppers use every day as they purchase their goods. There are six in total. 

She has come to Dublin to make us aware of all these varieties, so we asked her in for a chat about our grins.

We couldn't let her go without teaching us a few techniques on how to read people's moves. 

Judi could possibly be a member of the X-Men, as her abilities definitely come under the category of 'superpowers'.

You can listen to the chat in full by pressing play in the image above the headline.