Former Vice President Joe Biden’s once-unruly niece has ​apparently ​grown up.

Caroline Biden, 31, offered a heartfelt apology and promised that her wild-child ways were behind her Thursday when she was sentenced to two years’ probation for racking up over $100,000 on a stolen credit card.

“I not only acknowledge my conduct and take responsibility but deeply regret the harm caused,” the blond stunner told Justice Curtis Farber.

“I can assure you that I have made amends, full restitution, completed community service and that nothing like this will ever happen again,” added Biden, wearing a fitted black dress and ankle booties.

As part of the sweetheart plea deal, her felony conviction was tossed in June for the unauthorized shopping spree at a Greenwich Village pharmacy. She was allowed to re-plead to the lesser charge of petit larceny.

The pampered Georgetown grad completed 10 days of community service at a children’s hospital and paid full restitution of $110,810.04.

“I love the children, and I’m still working with the volunteer service program now and that’s been very fulfilling,” she said in Manhattan Supreme Court.

In 2017, Biden was busted after using the unidentified victim’s Chase card over the course of a year at Bigelow’s pharmacy, where face creams can run hundreds of dollars.

Prosecutors said Biden ended up with the card after the victim gave her permission to make a single purchase totaling $672.

“She’s profoundly remorseful,” defense lawyer Jim Liguori said in court.

This wasn’t Biden’s first brush with the law. She landed in cuffs in 2013 after a clash with a roommate over unpaid rent at their $3,500-a-month Tribeca pad — and took a swing at responding cops.

“I shouldn’t be handcuffed!” she railed to police at the time. “You don’t know who you’re doing this to!”

In that case, the charges were dismissed and sealed.