Prince William and Duchess Kate will be England's top couple in due time, but they're not even the most powerful person in their own household. According to The Queen, that honor goes to Princess Charlotte.

While speaking to a young schoolgirl named Emily, Queen Elizabeth II asked her if she "looked after" her little sister. The Daily Mail said that girl's mother, Ellen Clay, replied, "The other way around." The Queen immediately commented, "It's like that with Charlotte and George."
Ellen, the girl's mother, detailed the conversation with Her Majesty.
"She asked if Emily looked after Hadleigh and I said it was more the other way round. She said it was like that with Princess Charlotte and Prince George," Ellen said. "The Queen was implying that Charlotte keeps an eye out for George rather than the other way around. It is often the case that a younger child is more confident. It is second child syndrome."

Last year, Duchess Kate said similar things while speaking to the wife of a Royal Marine Warrant Officer during a memorial.
The woman said, "Kate said that Charlotte is growing up really fast. She is the one in charge. We have both got two-year-olds and they are ruling the roost. It was a bit of a mummy chat."
At the time, Kate told the woman that her royal tots were becoming "very good friends."