JUST AFTER BREANNA AND ARNAZ DECIDE TO TAKE A BREAK FROM EACH OTHER, D-MACK'S SISTER SHOWS UP AND BECOMES INTERESTED IN ARNAZ, ON "ONE ON ONE," MONDAY, FEB. 20 ON UPN

Ray J's Real-life Sister Brandy ("Moesha") Guest Stars as Michelle, D-Mack's Sister

"Tijuana Break Up?" � As Breanna and Arnaz decide to take a break from their relationship, things get uncomfortable when D-Mack's sister Michelle (guest star Brandy) shows up and makes a connection with Arnaz, causing Breanna to become jealous, on ONE ON ONE, Monday, Feb. 20 (8:00-8:30 PM, ET/PT) on UPN. Art Manke directed the episode from a script by Eric Lev.

Meanwhile, the stubborn roommates can't decide whose turn it is to go shopping, so instead of giving in, they hoard whatever food and coffee they have for themselves.

Breanna Barnes: Kyla Pratt
Arnaz Ballard: Robert Ri'chard
Cash Bagen: Jonathan Chase
Lisa Sanchez: Camille Mana
Darrell "D-Mack" McGinty: Ray J
Sara Crawford: Nicole Paggi
Michelle: Brandy
Greg: Michael J. Pagan

RATING: To Be Announced