Watch: Chris Brown Is Shirtless (Again) And Spend$ Serious Cash

Chris Brown and Wiz Khalifa sure know how to party like it’s hot.

The superstars were among the special guests at video vixen Rosa Acosta’s birthday bash at Supperclub in Hollywood Tuesday night and brought the house down with their impromptu performances for the b-day girl.

Per the norm as of late, Brown proudly showed off his tatted-up pecs to the massive crowd while belting out hit “Shots Fired” with Tankfrom stage.

And like any true VIPs, it’s all about celebrating in high price style – and $10K on bubbly alone is a drop in the bucket, giving girlfriend RiRi a run for her money after she reportedly spent $8,000 at King of Diamonds gentleman’s club last weekend.

“Chris drank bottles of Ace of Spades champagne all night. Bottles kept coming down from the ceiling going in there direction,” a party-goer told CB!

And if you don’t know what that is — the swanky champagne can run anywhere from around $300 a bottle to over $1,000 — and also holds the record of the most expensive bottle ever ordered ($60,000!) Oh, and Jay-Z is an investor, so if Queen Bey’s hubby approves, you know it’s got to be good.

Other A-listers who got on stage included Tyga and Neyo.

Check out the video above to see more of Brown’s shirtless action (and his entourage pouring the pricey bubbly.)