42-year-old J-Lo steps out with toy-boy Casper Smart 24

 Given the 42-year-old's impossibly youthful looks, there isn't much of an incongruity when J-Lo steps out with toy-boy Casper Smart. 

Sure, he's 24, but haven't ever looked particularly odd together.

Until today that is, when a very dressed up J-Lo arrived in Sao Paulo, Brazil dressed up to nines while Casper remained resolutely scruffy. 

With her towering Louboutin heels, sleek and retro beige mini-dress with matching hat... J-Lo looked both modest and mature. 

Casper, on the other hand, kept it casual in black jeans and a royal blue sweater.

But it was his clumpy boots that made him look like an unruly teenager being dragged along by his stylish mother.