Dwayne Johnson Sweetly Responds to Fan's Promposal -- Watch!

The action star's girlfriend, Lauren Hashian, gave birth to their newest daughter, Tiana, on April 23.

Dwayne Johnson is a standup guy!

The 45-year-old Rampage star has many devoted fans, but there's one in particular that recently caught his attention. Earlier this week, Katie Kelzenberg, a senior at Stillwater Area High School in Oak Park Heights, Minnesota, dressed up as The Rock and asked him to her prom via Twitter.

On Friday, Johnson took to Instagram to sweetly reply to Katie by recording a video of himself on the set of his latest film.

"SURPRISE KATIE KELZENBERG! About a week ago, I come across a video on my Twitter feed, from a student at Stillwater Area High School (oldest high school in Minnesota) asking me if I would be her date to her prom," his caption began. "Unfortunately, I’ll be shooting during that time in Hawaii, BUT I was so impressed by this young lady’s charm and confidence to even ask me (ladies always get shy in front of me) that I had to do something special."

"I decided to rent out an entire theater (capacity 232 seats) in her town so Katie and her closest 232 friends and family can enjoy a special screening of RAMPAGE. And all the free popcorn, candy and soda high school kids can consume! You’re money’s no good Katie... everything is on Uncle DJ," he added.