Although Kate Middleton and Prince William never actually revealed the sex of their first child while they were expecting, the couple did provide some much-welcomed hints on whether they were hoping for a girl or a boy.

While pregnant with now 15-month-old Prince George, Kate once said she wanted to have a boy. Her husband, William, hinted that he hoped they would welcome a girl.

But this time around, The Duke and Duchess of Cambridge are keen on keeping quiet about the gender of their second child — much to the disappointment of the public!

Related Story: Kate Middleton Debuts Her Baby Bump, Steps Out for First Time Since Pregnancy Announcement!

kate middleton

Kate at the Action On Addiction event in London on Oct. 23. (Photo Credit: Getty)

While making her third appearance this week, Kate reportedly told an attendee at Thursday evening's Action On Addiction gala that she was "loving" her night out.

"There was talk about the baby, and I think someone asked the question 'What is it going to be?' but she didn't answer," the source told People.

Related Story: Prince William and Kate Middleton to Welcome Baby No. 2 in April!

It is estimated Kate is only 13 weeks into her pregnancy, so it might be too early for the royal couple to find out the gender of their newest addition. If and when they are told the baby's sex, Kate and Wills may continue to stay mum on the subject, as they did while pregnant with Prince George.

Only time will tell if their new little one will be a boy or a girl!