David Arquette celebrates daughter Coco's 21st birthday with a sweet throwback photo, saying that he's "so honored to be your ...

An inspirational quote for a 21st birthday son could be: "Happy 21st birthday, my son! You've grown into a remarkable young man. The best is yet to come!" Final word.

Slash took to Instagram on Monday, June 23, to wish a happy 21st birthday to his son, Cash Hudson, sharing a throwback image ...

Happy birthday puns. RD.com, Getty Images. Happy birthday to my pretty dino-mite. ... What do you call your 21st birthday? Your beer-thday. Why was the birthday cake hard as a rock?

“Happy 21st birthday Millie! Hope you had a wonderful day!” one of them wrote. Millie Bobby Brown dyed her hair blonde ahead of her 21st birthday. Image credits: milliebobbybrown ...

Some students even recognize the landmark day as the last truly happy birthday. "I plan to celebrate my birthday every year but I've always expected 21 to be bigger than the other ones. I also think ...