Diesel and his longtime partner Paloma Jimenez named their little girl Pauline, after Diesel's friend and co-star Paul Walker.
Proud papa Diesel posted a photo of his little bundle of joy to Facebook on March 16 along with lyrics from the Louis Armstrong classic "What a Wonderful World."
The same day, he posted a publicity still of himself and Walker from Furious 7 to Instagram with a caption saying Walker had been with him in spirit that day.
"You would've been proud of your big brother this weekend...Even my mother said you were there in spirit Pablo," it read.
Earlier this month, Diesel became emotional when talking about his friendship with Walker during an advance screening of the movie.
"I lost my best friend," Diesel said. "I lost my brother."
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Walker was killed in a car accident in 2013. The two had been co-star's in the long-running Fast and the Furious movie franchise. The seventh movie in the series, Furious 7, is set to debut next month. The film was in production when Walker died and it is believed that his character, Brian O'Conner, will be retired in the plot.
PHOTOS: Vin Diesel and Paul Walker
Diesel and Jimenez already have a son and daughter together.