Here's what it was like inside Yahoo's lavish 'Roaring 20s' themed party that reportedly cost the company millions

On Monday morning, Eric Jackson, manager of hedge fund SpringOwl, sent a brutal 99-page presentation to Yahoo's board outlining his case for why the company should drop Marissa Mayer as CEO and find new management.

Among Jackson's grievances about Yahoo is everything Mayer has blown money on, from failed acquisitions to lavish parties and sponsorships.

He claims that a December 2014 party had a photo shoot that cost Yahoo $70,000 alone, and that the company's Roaring 20s-themed holiday party this year at Pier 48 in San Francisco cost $7 million. (A source told Vice that the cost was actually less than a third of Jackson's claimed $7 million).

We've rounded up some pictures from Yahoo's lavish holiday party so you can see what it was like.