Makenzie Nolan says she's grown close to Big Tex since she began her internship at Gator country, which is a gator rescue centre in Beaumont.
"He's one of my best friends here", Noland told KTXS.
Noland met Big Tex in May of previous year during her internship at Gator Country, an alligator adventure park in Beaumont. "Whenever we go into any other alligator's pond he's up there looking at us, making sure we're OK", Noland said.
"I worked with this alligator every day, and I figured, 'Why not wear a dress this time and celebrate my graduation with this incredible animal?'" she explained.
It was only a matter of time - a few weeks, to be exact - before she was tickling his nose and giving him food and kisses.
"It's just like how your dog would treat you if you treat him well", Noland told The Eagle.
Tex even let Noland balance her university ring on his snout as part of the unusual photoshoot.
The photo series received almost 6,000 shares and hundreds of likes on Facebook in just four days.
"This is no small task, in fact, Tex is very picky about who can get in and feed him, but today a huge step was made", Noland said in her post.
Every graduate wants that memorable graduation photo. Because of this, he was relocated to Gator Country from his home, Champion Lake at Trinity River National Wildlife Refuge, in October 2016.
Big Tex had "lost his fear of humans" because people were feeding him, the post said.
Since starting at the centre Makenzie has developed a special bond with Big Tex.