The perfect gentleman.

Matthew McConaughey was praised for standing up for Prince William and Kate Middleton upon the couple’s arrival at Wimbledon 2025.

A fan posted a video of the Prince and Princess of Wales and their oldest two kids — Prince George, 11, and Princess Charlotte, 10 — walking to their seats in the royal box at the All England Lawn Tennis and Croquet Club in London on Sunday.

When the Waleses approached their seats, McConaughey, 55, immediately stood up and clapped for the royals as they reached their row in front of the “Interstellar” actor.

McConaughey’s kind gesture garnered praise from fans online.

“Matthew McConaughey standing to applaud the Prince & Princess of Wales. What a lovely southern gentleman,” one netizen tweeted.

“Real class,” another added.

“McConaughey surely respects everyone he encounters,” a third person hypothesized.

“Mathew has always been a class act,” a fourth user said.

Charlotte and George stole the show when they made a surprise appearance with their parents to see Spain’s Carlos Alcaraz and Italy’s Jannik Sinner compete in the men’s singles final on Sunday.

The family color-coordinated in blue and white looks, with Middleton sporting a bright blue belted dress, and Charlotte rocking a white dress.

Both George and William, 43, looked dapper in navy blue suits.

Middleton, 43, also attended the tennis tournaments solo on Saturday to watch American tennis star Amanda Anisimova and Poland’s Iga Swiatek compete in the women’s singles final.

The mom of three, who announced her cancer-free status in January, stunned in an ivory belted blazer-style top and cream pleated skirt.