RHOBH Alliances! Yolanda Foster Invites Only Two Castmates To Husband David's Walk Of Fame Ceremony

Lines are being drawn, and alliances cemented in the ongoing drama of the filming of The Real Housewives Of Beverly Hills.

On Friday Yolanda Foster's  uber talented, music composer hubby, David Foster received a star on the Hollywood Walk of Fame, but the blonde beauty only invited Brandi Glanville  and Lisa Vanderpump, leaving the rest of the cast out of the festivities, RadarOnline.com is exclusively reporting.

"Yolanda made it clear, that she only wanted Brandi and Lisa to attend the ceremony, which was also filmed for the upcoming season of the Beverly Hills housewives franchise," a source tells RadarOnline.com exclusively.

"Kyle Richards, Kim Richards, new hotty housewife Joyce Giraud and Taylor Armstrong weren't invited. It's just clear that this season there is going to be even more cattiness, with an Lisa, Brandi, Yolanda versus the rest of the ladies. There is really no reason for it. It's really sad that is has reached this point because all of the ladies used to get along. The ladies got into squabbles, but nothing like this," the source says.

As RadarOnline.com previously reported Kyle threatened to quit the show after Brandi and Lisa said negative things about her husband.

"She was particularly hurt by Lisa's actions because they once used to be such close friends," a source told RadarOnline.com about Kyle's reaction. "They no longer are, and Kyle had wanted to work on that friendship, and try to mend it...now, that seems impossible. Kyle just can't understand why the girls can't come together and support each other."