Taylor Swift and Travis Kelce ain't brothers ... but, they certainly brought the love to Philadelphia -- and, their fans can ...

Designer Brian Atwood, model Arlenis Sosa and celebrity doctor Jake Deutsch ... Saquon Barkley and the Philadelphia Eagles celebrating their Super Bowl LIX win post-game with Don Julio 1942.

The couple was seen at a restaurant with the Kansas City Chiefs star’s mom, Donna Kelce, brother Jason Kelce and sister-in-law Kylie Kelce.