Umm... our self esteem just went down a little bit.

J.Lo stars in the latest Guess campaign, and we seriously cannot believe she's almost 50! We guess this is what eating healthy, not drinking or smoking, and exercising does for you, and we seriously wish we had her discipline.

So how did this collab with Jenny from the Block come about?

"When I got the call from Paul Marciano asking me to become the new GUESS Girl, I was thrilled and excited to be a part of such an iconic brand that I have loved since I was a teenager. When I look back at early GUESS campaigns through the years, you see all of these beautiful models and iconic images that Paul has created. It is a tremendous compliment to have been selected for GUESS’ Spring 2018 campaign," she explained.

No wonder A-Rod is ready to put a ring on it!