Kate Middleton and Prince William still don't know second baby's sex

LONDON, Feb. 5 (UPI) -- Britain's Prince William and his pregnant wife Kate Middleton will likely keep their second child's sex a secret until he or she is born -- and for good reason. They don't know what it is.

"The couple do not know what the sex of the baby is!" palace officials told E! News Thursday.

Middleton is nearly seven months pregnant with her second child. She and William already have an 18-month-old son named George.

The 33-year-old duchess was widely quoted last month as saying George's younger sibling is already very active.

"It's moving all the time," she reportedly said. "I can feel it kicking now."