'Star Wars': Mark Hamill Honors 'Son' John Boyega, Shares Very First Luke Photo

John Boyega just turned 25 on March 17, 2017. Hamill's Twitter is a gift that keeps on giving, and this week he posted 1) possibly the first-ever photo of Luke on the set of "Star Wars," and 2) an adorable birthday shout-out to his "son," Boyega.

Taken in Tunisia early morning Day #1 waiting for my 1st shot (emerging from home for robot auction)-Perhaps the very 1st #LukePic #SW pic.twitter.com/WMCGnWCotP

— Mark Hamill (@HamillHimself) March 18, 2017

Hamill also got candid when a fan asked, "At that very moment, were you thinking 'This is gonna be my big break' or 'Crap, it's early, dusty and way too bright'?"

Judging by my clueless expression, probably both. Crew was kind but thought #SW was "rubbish"-I kept telling them"We're on a winner!"#LOLuke https://t.co/S6mzZbWLvD

— Mark Hamill (@HamillHimself) March 18, 2017

Boyega's Finn had his own big start in the "Star Wars" galaxy in "The Last Jedi."

Hamill and Boyega shared a very father/son exchange to celebrate the young star's 25th b-day:

Shout-out to @JohnBoyega for no reason other than being wickedly-proficient w/ a lightsaber w/ no training whatsoever. You do me proud, son! pic.twitter.com/xeCFbzA9ph

— Mark Hamill (@HamillHimself) March 17, 2017

Late response because I'm in Beijing but thanks dad @HamillHimself

— John Boyega (@JohnBoyega) March 19, 2017

Kids! They never call, they never write & the excuses just get more elaborate- "I'm in Beijing" Yeah, right & I'm on a date w/ Beyonce-LOL! https://t.co/ekaF9IiXid

— Mark Hamill (@HamillHimself) March 19, 2017

Boyega was actually on the set of "Pacific Rim 2" for the milestone:

Pleasant surprise !Turning 25 on set with the Pacific Rim family is an absolute joy ! Thank you all for the surprise ❤️❤️#pacificrimuprising pic.twitter.com/sDT7zqiY8k

— John Boyega (@JohnBoyega) March 17, 2017

"Star Wars: The Last Jedi" opens December 15th, 2017. "Pacific Rim: Uprising" is scheduled for release February 23rd, 2018.

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