3. Lisa Kudrow
“Friends” wouldn’t be “Friends” if it wasn’t for the quirky and insane Phoebe, which meant she couldn’t be removed from even a single episode when Lisa Kudrow, who plays the part, became pregnant.
The writers had Phoebe pregnant with triplets as a surrogate mother in the fourth and fifth seasons, which worked very nicely overall considering how weird the character is in general.
Furthermore, Kudrow was also the first actress that had to wear additional padding over her already-gigantic baby bump.
This was because the actress was carrying one child while her character was pregnant with three babies, so it had to look at least a little believable.