On the heels of the unexpected news that the longtime low-key pair welcomed twins over the weekend, fans are questioning everything they thought they knew about the couple—and just life in general. After all, to keep a pregnancy completely secret for nine months is quite a feat, particularly for a high-profile pair like this one.
However, they are not the first celebrities to keep their baby news under wraps. From Eva Mendes to Lucy Liu, a handful of famous moms and dads have managed to keep the arrival of their little ones a surprise in the months leading up to their births—and for some, even months afterward. Read about some of those discreet stars below: