See the world's cutest daddy-daughter photo of Vin Diesel with his 4-month-old baby girl Pauline. Credit: Allen Berezovsky/WireImage

All too cute, daddy Groot! Guardians of the Galaxy actor Vin Diesel shared the world's cutest daddy-daughter photo with his 4-month-old baby girl, Pauline, on Monday, Aug. 10.

"All love..." the burly action star, 48, wrote, alongside a beautiful candid of his little girl kissing daddy's forehead.

In the pic, baby Pauline affectionately grips Vin Diesel's earlobe with her tiny fingers as she looks up at him with fascination. The proud father, meanwhile, grins and squeezes his eyes shut as he cuddles his little one.

All love...

A photo posted by Vin Diesel (@vindiesel) on Aug 10, 2015 at 8:30am PDT

The Fast & Furious actor welcomed his baby girl with his longtime girlfriend, Paloma Jimenez, in March, and named little Pauline after his late friend and costar Paul Walker.

"There's no other person that I was thinking about as I was cutting this umbilical cord," Diesel told the Today show in March. "I just thought... I knew he was there and it felt like, you know, a way to keep his memory a part of my family and a part of my world."

The newborn tot joins the couple's two older kids, daughter Hania, 7, and son Vincent, 4.

In an interview with Extra last week, the Last Witch Hunter actor gave some new details about his youngest's latest milestones.

"Just yesterday she went to the New York Library for the first time, you know in all of her 4-month glory," he dished. "And she very much enjoyed it, she was reading up a storm…It’s heaven, it’s heaven for her, even though she’s so young, just her experience in the city that I grew up in, in the city is that so much a part of me is an awesome thing."

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