*Even though he and his wife, Mariah Carey, are worth millions, Nick Cannon is seeking corporate sponsors to make his 30th birthday a smash. Yes, the young millionaire wants someone else to payfor his birthday party.

According to Page Six, Nick sent out a mass e-mail asking companies to put up $25,000 for three tweets about his bi-coastal birthday parties that will be held on Oct. 8 & 9. And from the expression on his face in the photo above, he looks dead serious. So give him the money!

So guess who the confirmed guests are? Of course wife and host Mariah Carey, but Jay-Z, Beyonce, Will and Jada Smith, Ashton Kutcher and Demi Moore, Kobe Bryant, Quincy Jones, L.A. Reid and Jamie Foxx.

The e-mail noted:

“This is an extremely exciting opportunity to sponsor a fun and lavish event . . . opportunities range from gift bags and signage to tweets and photo ops.”

OK, Nick, put us down. As long as you agree to let us pay it off over the next 25 years.