Travis Kelce was front and center for his girlfriend, Taylor Swift, as she took the stage down under anew … and she showed her appreciation for him afterward with a little sugar.

The Kansas City Chiefs tight end was among thousands of people in attendance Friday at Accor Stadium in Sydney — where T-

Travis soaked up all the attention … clapping and waving at all the young’ns as he passed them — with security flanking him on all sides, of course. He had a buddy with him too — Ross Travis — who’s a former Chiefs player … and who’s randomly accompanying Travis on this Aussie trip. Taylor’s dad, Scott, was also in the mix as Trav went to his VIP tent.Swift kicked off a fresh round of performances heading into the weekend. Just like at other shows of hers he’s been to … the fans went wild.

BTW … there were other famous people at this show — namely, Katy Perry and Rita Ora … and Travis snapped a photo with the latter. Indeed, he’s got his friendship bracelet on! After the concert, he was there to greet Taylor — and lingering fans saw her plant one on him.

As Travis and co. looked on … Taylor was onstage doing her thing, and put on a helluva show like she normally does. Lots of highlights from that — all captured in photos, no less.

When it comes to Travis — the dude is obviously committed to the relationship — he’s already traveled internationally for Taylor before this … and he did it again here in Australia. He hasn’t missed a beat either with Taylor since arriving — going from plane to zoo date ASAP.