Kate Middleton Baby: Guess the Royal Baby’s Weight, Birth Date and You Could Win a Cruise!

Guess the birth date and weight of Kate Middleton and Prince William's
Guess the birth date and weight of Kate Middleton and Prince William's baby -- and you could set sail on a 7-day Caribbean voyage aboard Princess Cruises' newest ship, christened by Kate Middleton Mark Cuthbert/UK Press via Getty

Babies — especially royal ones — have their own agendas.

Yes, Kate Middleton and Prince William's little one is officially scheduled to make his or her grand entrance on July 13 . . . but that doesn't mean he or she won't pull a North West.

Here's where you come in: We're asking Us Weekly readers to put their guestimation skills to the ultimate test. Predict the future monarch's birth date and weight, get them right, and you could score a 7-day Caribbean vacation on Princess Cruises' Royal Princess, christened by Kate.

Think you're up to the task? Click here to submit your best guesses.

prince william and kate middleton
Prince William and Kate Middleton Getty

* NO PURCHASE NECESSARY. Void where prohibited. Open to residents of the United States and Washington, D.C. (EXCLUDING RESIDENTS OF OVERSEAS MILITARY ­INSTALLATIONS, PUERTO RICO AND OTHER U.S. TERRITORIES), who are 18 years of age or older as of 6/26/2013. To enter, log on to usmagazine.com/guess-the-weight-and-date and follow the registration and entering directions. Grand prize winners: 1; ARV: $2,388. Runner-up winners: 20; ARV: $69.95. Odds of winning depend on the number of eligible entries received. Sweepstakes begins at 9:00 a.m. edt on 6/26/2013 and ends on 11:59:59 p.m. edt on 7/3/2013. Certain restrictions may apply. Complete Official Rules are available at usmagazine.com/guess-the-weight-and-date.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!

Close popup

Welcome to In Motion

Bring photos to life with Us Weekly's exciting new mobile experience!

What's In Motion? Tell me more

What's In Motion?

Go back

How to Use In Motion

What's In Motion? Tell me more