Pitt & Jolie Party While Tarantino Goes Missing

Brad and Angelina held court at Inglourious Basterds bash, but Quentin is a no-show

Where in the world was Quentin Tarantino?

The director hit the red carpet and screening of his new movie Inglourious Basterds last night in Hollywood but was a no-show at the big Mondrian hotel afterparty.

I'm told Tarantino drove himself to Grauman's Chinese Theatre, where he did plenty of press and photo ops with Brad Pitt & Co. He not only introduced the film but sat through the screening, too.

"He got back into his car after the movie but never came to the party," a source said. "No one knows where he went or why didn't show up. If anyone loves a party, it's Quentin."

But that didn't stop Pitt from enjoying himself at the bash. Read on for details about his big date night with Angelina Jolie...

While premiere-goers were watching the flick, I'm told Brangelina relaxed in their own private suite at the hotel.

Pitt and Jolie kept such a low profile, most didn't even notice when they arrived to party. They used an out-of-the-way service elevator instead of coming through the front door, where guests were greeted by scantily clad female models carrying pretend machine guns.

The supercouple held court in a corner, where they chatted with Pitt's costars, hunky Eli Roth, B.J. Novak and Christoph Waltz, who steals every scene he's in as Nazi tyrant Col. Hans Landa. Diane Kruger wowed the crowd in a very teensy-weensy dress (no word if she realized that the cutout on the back gave several onlookers a peek at some butt crack).

Jolie did step to the side for a few minutes to talk with Camryn Manheim, but Brad and Angie were pretty much inseparable—with their arms wrapped around each other—for most of the evening. They even snuck in a few smooches, too.

The parents of six headed home shortly after midnight.