OFF WITH THEIR HEADS! Forbidden Tweets And Photos From A Tech Mogul's Lavish Party

Victoria HerveyLoose fingertips.

Naughty, naughty!Yammer CEO David Sacks—who’s reportedly selling his social-enterprise startup to Microsoft for more than $1 billion—invited HUNDREDS of guests to his huge 40th birthday party in Los Angeles this weekend.

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287 invites went out. 350 people showed up. And he expected them to all stay quiet.

Sacks runs what’s been called the “Facebook for business”—but guests weren’t supposed to use social media or photo-sharing services at all at the party, which also marked his upcoming fifth wedding anniversary.

The theme: “Let him eat cake.” Costume shops from San Francisco to Los Angeles ran out of 18th-century French dresses and suits. Some guests had gowns custom-sewn for the occasion.

Despite this, they weren’t supposed to discuss even the existence of the party, as Sarah Lacy, editor of the PandoDaily tech news site, discovered to her dismay.

Guests were uncomfortable with the publicity, Sacks told her in an email that Lacy received as she was in the security line at the airport heading to the party.

One guest said the party cost $1.4 million. We have no idea where he got that figure, but we can see why someone would guess a number in that ballpark. It was held at the $125 million Fleur de Lys mansion in Beverly Glen—one of the 10 most expensive homes in America. And Snoop Dogg was the entertainment.

If it really cost that much, it’s about one-tenth of one per cent of what Microsoft is reportedly going to pay for Sacks’s company.

Luckily for you, some of the invitees broke the rules and let slip some glimpses of the party.

UPDATE: We originally reported that a thousand people had been invited. A source close to the matter subsequently provided us with the actual numbers.

Guest Yarom Limor had to go far afield to get his outfit. The Theatre Company is 36 miles east of downtown LA.

The Theatre Company is a huge LA costume shop, mostly serving film and stage productions.

LA socialite Victoria Hervey knew the rules ...

... but she bent them anyway, modelling her wig and jewels.

Journalist Sarah Lacy wasn't so lucky. After she mentioned she'd been invited to the party in an article, David Sacks disinvited her

Hervey and Nikhil Ra, owner of Division Entertainment, showed off their costumes.

Snoop Dogg wished David Sacks, a father of two, a happy Father's Day.

But wait, who's that next to Snoop?

Could that be Sacks himself?

Limor and friends decompressed at the Four Seasons Los Angeles.

Yammer's CEO isn't the only tech mogul to throw a notorious bash ...

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