'Project Runway' Star -- New Tampa Bay Bucs Jerseys ... 'A LOT SEXIER!'

The Tampa Bay Buccaneers are finally making some progress ... at least when it comes to fashion ... because TWO top couture designers tell us the new Bucs uniforms are downright SEXY!

TMZ Sports spoke with "Project Runway" alum Michael Costello -- who also designed Beyonce's Grammy dress -- and he tells us he's all about the change in Tampa Bay.

"I LOVE the new uniform," Costello says ... "It's fresh, it's cool. It's a lot sexier. The old one looked like a t-shirt."

We also spoke with celeb stylist/designer June Ambrose ... who's worked with huge stars like Jay Z and Diddy ... who's also fired up for the Bucs' new uni to hit the field.

"The look reminds me of this wild black bird! It's a sexy suit ... looks like it's ready for the runway!"

Ambrose adds, "I love how it minimizes the tight end of the players tail. The suit is sleek and super powerful! All the ingredients for the iconic class."

It's good news for the Bucs -- 'cause as Deion Sanders once said: "If you look good, you feel good. If you feel good, you play good. If you play good, they pay good."