Britney Spears Threatens Porn Star — I’m So Rich, I’ll Destroy You!

EXCLUSIVE

Britney Spears’ people are trying to tough the woman with whom her boyfriend cheated … by threatening she’s so rich and powerful she’ll ruin the woman if she blabs.

It’s pretty shocking … Britney’s legal team sent a nasty letter to Cali Lee … warning her that Brit’s former BF David Lucado signed a confidentiality covenant with Britney, and anything he…