Rocket voice actor Bradley Cooper kept things casual in a sweater and sneakers.
Chukwudi Iwuji plays the bad guy, the High Evolutionary, in the sequel — and he wore a sharp green suit for the premiere.
Will Poulter looked equally suave in a Yves Saint Laurent suit.
Kraglin star Sean Gunn also brought his wife, actor Natasha Halevi, to the premiere.
Brothers Sean and James Gunn also snapped a photo together.
Marvel newcomer Daniela Melchior also showed up in a vibrant pair of green boots.
Australian star Elizabeth Debicki reprises her role as High Priestess Ayesha in "Vol. 3," and she brought an ethereal look to the carpet.
"Guardians of the Galaxy" alumni Michael Rooker showed up to support his friends and rocked a casual flowery shirt.
Marvel fans might know Linda Cardellini as Linda Barton in "Avengers" and "Hawkeye," but she voices Lylla the Otter in "Guardians of the Galaxy Vol. 3," and she brought her daughter to the premiere.
Actor Rob Lowe also attended the premiere with his son, Matthew Edward Lowe.
The whole cast later took to the stage to introduce the film.
Jason Fitz and Frank Schwab join forces to recap the draft in the best way they know how: letter grades! Fitz and Frank discuss all 32 teams division by division as they give a snapshot of how fans should be feeling heading into the 2024 season. The duo have key debates on the Dallas Cowboys, New York Giants, New Orleans Saints, Los Angeles Rams, New England Patriots, Las Vegas Raiders and more.