They already have three children and are a happy family, but that doesn’t mean Kate Middleton and Prince William aren’t willing to expand their brood by one more.

According to reports the couple is allegedly expecting their fourth child—another girl and will be welcoming her by Spring 2020. As such, the Duke and Duchess of Cambridge are reportedly gearing up for the new adventure and broke from tradition when it came to learning their baby’s sex ahead of time.

“William and Kate are expecting their fourth child,” a source reportedly told OK! Magazine (via Celebrity Insider). “This time, they thought it would be fun to just enjoy the planning process—decorating the nursery and picking out adorable clothes and toys. So they decided to buck tradition and learn the [gender].”

However, an official announcement confirming a pregnancy is yet to be made, and other indicators could suggest that the report is false as well. Despite alleged “baby bump” photos surfacing, recent appearances Middleton has made have seen her still sporting a flatter stomach. In addition, the Duchess hasn’t shirked away from her royal duties at all—something her bouts of hyperemesis gravidarum forced her to do during her first three pregnancies.

After a woman contracts the extreme form of morning sickness a first time, she is significantly more likely to also have it during subsequent pregnancies, meaning it’s unlikely Middleton would not have any symptoms this time and still able to perform her duties.

It’s also been noted that even if her symptoms were more manageable where she was able to go for standard engagements, the fact that she participated in the King’s Cup Regatta last month by sailing in a rocky boat is also likely a sign she may not be expecting, since even more well-managed symptoms would likely show up in that situation.

Kate Middleton and Prince William
Prince William and Kate Middleton attend the 1st Battalion Irish Guards St Patrick's Day Parade at Cavalry Barracks on March 17, 2019 in Hounslow, England. Getty Images/Gareth Fuller