Jessica Simpson SUED!

Things are really not going well for Jessica Simpson!

Back in 2005, she shot an exercise video for the "Speedfit System." (See above)

She was desperate for work even back then...and apparently suffering from a bit of the Lindsay Lohan because she was reportedly "a mess during the shoot," showing up "tipsy." Or do they mean "ditzy?"

Either way, the company asked for a do-over, which Simpson refused, and now, owner Alex Astilean is suing Jessica for a $10 million breach of contract.

Jessica should do more than reshoot the video, she should sign up for the program - stat!