@fergie / Instagram 1 / 13
@fergie / Instagram 1 / 13

Baby Axl's need for speed! Fergie shared an Instagram picture of herself playing dress-up with 7-month-old son Axl on April 3.

"What happens when daddy goes to set… #roaddogz4life," Josh Duhamel's wife, 39, wrote alongside an adorable snapshot with Axl Jack seated in a toy Ferrari. Both mom and son sported shades and biker-esque caps -- Axl in a black beanie and mommy in a printed bandana -- for their play date.

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During a recent Reddit AMA, Duhamel shared with fans what he enjoys most about fatherhood. "[I love] watching him develop into a little boy. Sitting up, holding a bottle or cruising around in his walker. You don't think it's a big deal until you see your kid doing it."

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The "Safe Haven" hunk, 41, who was joined in the room by his family, quipped, "Right now, at this very moment, she is singing Avicii to Axl. He loves it. I tried doing the same thing the other day and he just puked."

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The first-time dad also revealed to fans that he and the Black Eyed Peas frontwoman want siblings for Axl. "I'm ready whenever it happens," he said. "I'm always at the ready. We'd like 16."

Duhamel has a slew of big-time flicks due this year, including "You're Not You" with Emmy Rossum, "Strings" with Maria Bello and Laura Dern, and "Lost in the Sun" co-starring Josh Wiggins. He also recently shot a pilot for a TV series, "Battle Creek."

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