Royals Find Out What Prompted Princess Kate to Say, 'We Will Just Have to Have More Babies!' Better make room on the royal plane for one more! By Erin Hill Erin Hill Twitter Senior News Editor, PEOPLE People Editorial Guidelines Published on July 17, 2017 12:56 PM Share Tweet Pin Email Better make room on the royal plane for one more! After she was handed a gift for a newborn by a well-wisher in Poland on Monday, Princess Kate joked to husband Prince William: “We will just have to have more babies!” according to a Daily Mirror reporter. Chris Jackson - Pool/Getty Images Will and Kate traveled to Warsaw with their two children, Prince George, who turns 4 on July 22, and Princess Charlotte, 2. FROM PEN: Raising a Little Princess: All About Charlotte’s Amazing Childhood The royal family kicked off their five-day tour of Poland and Germany, which includes a garden party, boat race and more. Samir Hussein/WireImage And the siblings didn’t disappoint as they hit the tarmac. Prince George showed off his shy side with an adorable pout as he got a pep talk from dad. While Princess Charlotte was all smiles in mom Kate’s arms. Chris Jackson/Getty This trip marks the third royal tour for George and the second for Charlotte, which means they could easily show a third sibling the ropes! Put your celeb and pop culture knowledge to the test and download PEOPLE and Zynga’s Crosswords with Friends!