Nicole Sweet/Getty ImagesWe're not saying there was any drama behind the no-shows, but there was a gaggle of gals noticeably absent from Kelly Killoren Bensimon's birthday dinner this week.
None of the original Real Housewives of New York stars, Bethenny Frankel, Countess Luann Lesseps, Jill Zarin, Ramona Singer or Alex McCord, were among the 32 guests who helped the leggy supermodel mom celebrate at restaurant Beba.
However…
One of the new Housewives, Jennifer Gilbert, was there. An eyewitness says that Bensimon and Gilbert appeared to be good friends, chatting up a storm and laughing together.
How soon do you think it will be before these two have a falling out?
Meanwhile, in other celebrity sightings:
BLENDING IN: Britney Spears, sweating it out unnoticed while taking an exercise class at Bar Method in L.A.'s Agoura Hills.
RUNNING SMOOTHLY: Rumer Willis, sipping Haamonii Smooth Shochu cocktails at Nine Zero One salon in Hollywood, a few days after joining her dad Bruce Willis and boyfriend Micah Alberti for dinner at Katsuya Brentwood in L.A.
BOTTOMS UP: Paris and Nicky Hilton, taking shots of TY KU liqueur and Grey Goose, as Lil Jon played the song "Shots" at the Hard Rock pool in Las Vegas.
SPARE ME: 90210's Tristan Wilds, hanging out at the SAGIndie Bowling Party at NYC's Bowlmor during the Tribeca Film Festival.
AT YOUR SERVICE: Justin Timberlake, playing bartender for two hours, while partying with Diddy at an event for Timberlake's 901 tequila line, at Industry nightclub in West Hollywood.
DANCEFLOOR DIVA: Katy Perry, shaking it all night to the sounds of DJ Mia Moretti at HWood's Tea Room in Hollywood.
FASHION FETE: Wilson Cruz and Jai Rodriguez, mingling with guests at the Miss Sixty Summer Collection Launch, hosted by Jenni Baird, at the line's boutique in West Hollywood.
FOR THE CAMERAS: Audrina Patridge and Kristin Cavallari, filming scenes for The Hills at Paula Abdul's ex-boyfriend John "JT" Toregiani's birthday party at Les Deux nightclub in Hollywood.
And speaking of The Hills, make sure to come back here later on for an exclusive sneak peak at a certain hot dude talking about a certain starlet's rocker boyfriend.