Paul Walker's daughter Meadow celebrated her 21st birthday on Monday.

Many of the late actor's former "Fast and the Furious" co-stars sent well-wishes to Meadow to help her celebrate her special day.

Vin Diesel, a longtime friend of Walker's, shared a sweet post for the birthday girl. "I could say that I am so proud of the person you are becoming... but the truth is I have always been proud of you," he wrote. "Happy Birthday Meadow!"

"I know it’s your 21st and you wanted to go big in Japan, but the family has a cake waiting for you when you get home, so hurry," he added.

"Love you kid," he wrote, signing the note, "Uncle Vin."

Meadow seemed touched by his words, commenting, "Thank you so much. I can’t wait to see you soon. And my little angels. Love you."

Jordana Brewster, another co-star of Walker's, also sent her best wishes. "Happy Birthday @meadowwalker You are a soul sister and I love you with all my ❤️" she captioned a photo of the 21-year-old.

Meadow launched the Paul Walker Foundation in 2015 to carry on her father's legacy. She often shares posts remembering him on her Instagram account.

In August, she shared a touching photo of him, writing, "thinking of you xx" in the caption.