TUESDAY, SEPTEMBER 16

"90210" � (8:00-9:00 p.m. ET)

"The Bubble" (TV-PG, L) (HDTV)

KELLY AND BRENDA GET INTO AN ARGUMENT ABOUT THE BABY'S DADDY AND DIXON GETS A JOB IN THE PEACH PIT � Harry (Rob Estes) reveals that West Beverly's theater director is no longer able to direct the school musical, "Spring Awakening," prompting Tabitha (Jessica Walter) to offer her services as the new director, much to Annie (Shenae Grimes), Harry and Debbie's (Lori Loughlin) surprise. Tabitha's approach with Adrianna (guest star Jessica Lowndes, "Greek") doesn't go over well, so Kelly (guest star Jennie Garth) convinces Brenda (guest star Shannen Doherty) to take over as guest director of the play. Kelly and Brenda get into a heated conversation about Kelly's involvement with Ryan (Ryan Eggold) and how it may affect her son. Dixon (Tristan Wilds) is worried about the family's financial situation and talks with Nat (guest star Joe E. Tata, "Beverly Hills, 90210") at the Peach Pit about a part-time job. Naomi (AnnaLynne McCord) confronts her father's mistress and is shocked when she learns the direction in which her parents' marriage is headed. Annie is still upset with Ty (guest star Adam Gregory) and agrees to a date with Ethan (Dustin Milligan), only to be disappointed by its outcome. Michael Steger and Jessica Stroup also star. Sarah Pia Anderson directed the episode written by Dailyn Rodriguez (#104).