Bindi Irwin looks all grown up in selfie

(Reuters/Instagram)

Bindi Irwin, is that you?

The 17-year-old daughter of the late "Crocodile Hunter," Steve Irwin, looks nearly unrecognizable in the selfie she posted on Wednesday night. In the Instagram image, Irwin is all done up as she flashes a smirk while showcasing her new T-shirt. "In consideration of 'Thelma and Louise' and my friend who I've loved my whole life, Thelma," she captioned the pic. "This shirt is for you."

The gorgeous selfie comes nearly a week after Irwin jokingly announced that her "rebellious years" had hit as she posed behind a sign that read: "Service area, do not enter."

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"Everyone always asked when my rebellious years would hit," the former "Dancing With the Stars" winner joked. "Well, now you know. #Rebel #ReadTheSign #PrettyMuchWild"

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ET caught up with Irwin in May, and she revealed that she recently made a big step into adulthood. "I officially have my driver's license," she exclaimed. "Although, it was a little intimidating for the driving instructor because I was in my dad's old ute -- it's this giant beast of a truck and it's a manual and it's really old, so he was a bit nervous as he got into this [utility vehicle]."