Tennis star Serena Williams, supermodel Karlie Kloss unveil baby bumps at the Met Gala

While the Met Gala has a famously strict "no plus ones" policy, these two expecting mothers managed to sneak an extra partygoer into the star-studded event.

Tennis star Serena Williams, supermodel Karlie Kloss unveil baby bumps at the Met Gala
While the Met Gala has a famously strict "no plus ones" policy, these two expecting mothers managed to sneak an extra partygoer into the star-studded event.