07. Lisa Kudrow was pregnant in real life while filming the fourth season of the show

Phoebe’s pregnancy was one of the craziest and funniest storylines on the show. However, it was not in the original plot planned for the season.

At the time they started filming the fourth season, Lisa Kudrow was actually pregnant herself!

The actress was expecting her first and only son, Julian Murray Stern, in 1998. As filming progressed, her belly began to grow, and the storyline of Phoebe getting pregnant with triplets was incorporated into the season’s plot.