Robby, the waiter at the country club is the father. Everyone thinks it's johnny but he is not. He was taking care of penny because he cares about her. Baby dad thought it was johnny because he didn't learn until later what a bad person robby was.
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Penny got pregnant by that boy Baby's sister was chasing around. Robbie Gould is the character's name. Anyway, the doctor she hired to do the abortion was a quack. He didn't know what he was doing (I think one of Penny's friends called him a "butcher") and his instruments were dirty. She got some kind of infection or sepsis and she might've died, if Baby's father hadn't been there.
Cynthia Rhodes played the part of Penny Johnson in Dirty Dancing.
Here is her imdb.com page:
http://www.imdb.com/name/nm0722407/
it is my understanding that Rizzo was the girl who got pregnant in Grease.
No. She did not get pregnant.
sullyhad sex withher with out a condon and then sperm got into her virgina and then she got pregnant :) by Lloyd, aaron and shaun
The episode penny got a credit card on is Don't Leave Home Without It.
Lady Sovereign - I got you dancing (: