'Happy Endings' is adding a group of mean girls courtesy of ABC Family.

According to TVLine, 'The Secret Life of the American Teenager' star Megan Park and 'Make It or Break It' actress Nicole Gale Anderson will play a pair of high school girls who connect with Alex and Penny.

However, the young duo turn sour when Jane enters the picture.

The episode is set to air Oct. 5.

In other casting news ...

(S03E15) The folks over at Medium are on something of a guest star roll. After a nice turn last week by Eric Stoltz, this week they treat us to Peri Gilpin (Frasier) as Allison's mother Diane Benoit. That wasn't the only piece of nice casting here. Given the ratings of their former shows, I'm sure that Kyle Gallner (Veronica Mars) isn't as recognizable as Gilpin, but it was nice to see him again.

For her part, Gilpin was terrific. Diane certainly had her issues, but considering what we know about Allison, I don't think anyone was expecting June Cleaver. The booze and the parenting with pills were a little disturbing, but in her own crazy way I got the feeling that she really was trying to do what she thought was best for Allison. While she seems to have avoided some of the mistakes Diane made, Allison does share that trait with her mother.