Kate Middleton turned 31 this week and was reportedly spending the day "privately" with her family.
But the pregnant Duchess had a more public celebration than was first thought and was seen having a great time at a performance of Cirque du Soleil at London's Royal Albert Hall.
Kate went through a tough time with severe morning sickness early on her pregnancy but she's looks like she's feeling better now she's in her second trimester.
If you had Kate's wealth how would you celebrate your birthday? Let us know below or tweet us @OKMagazine!