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Why Prince William thinks daughter Princess Charlotte is going to be 'trouble'

Prince William joked about Princess Charlotte, 2, and said Prince George, 4, 'still rules the roost' during a visit with hospital patients.
/ Source: TODAY

Prince William already knows what he's in for with Princess Charlotte when she grows up.

The Duke of Cambridge joked about his 2-year-old daughter while visiting with patients at Aintree University Hospital in Liverpool, England, on Thursday.

Princess Charlotte
Me? Trouble? C'mon Dad!Getty Images

"She's going to be trouble when she gets older," William told patient Pagan Tordengrav. "All fathers say that to me - watch out for the little girls."

Surely he can't be talking about the adorable little girl who's already stealing the show from the grown-ups with her curtsy skills?

Maybe he means the Charlotte who had a meltdown on a helicopter tarmac this summer?

The Duke And Duchess Of Cambridge Visit Germany - Day 3
Tantrum on the tarmac! (But Charlotte is still so cute)Chris Jackson / Getty Images

The Duke of Cambridge was also asked about Prince George, 4, who started school last week.

"George has been really easy,'' he told patient Theresa Jones. "He hasn't said, 'Have I got to do this for the rest of my life?'"

The Duke Of Cambridge Visits Liverpool
Prince William shared a joke about his children with patient Theresa Jones during a visit to Aintree University Hospital in Liverpool. Chris Jackson / Getty Images
The Duke Of Cambridge Visits Liverpool
Prince William chatted with cancer patient Pagan Tordengrav during his visit to Aintree University Hospital, talking with her about his children and their taste in music. Chris Jackson / Getty Images

The young prince is still at the top of the pecking order in William's growing family with Duchess Kate.

"George rules the roost, but Charlotte's not far behind,'' he told Jones.

The Duke Of Cambridge Visits Liverpool
Prince William hugs Katie Daley during the visit to Aintree University Hospital, one of three visits he made on Thursday to medical facilities. Chris Jackson / Getty Images

Kate may beg to differ, as she joked to a fellow mom in March that Charlotte "is the one in charge" in the household.

Prince William followed his hospital visit with trips to a local mental health facility and then a meeting with swimmers at a pool club supported by organizations of which he is a patron.

The Duchess was unable to make Thursday's visit due to extreme morning sickness following last week's announcement that she is pregnant with the couple's third child.

Follow writer Scott Stump on Twitter.