As far as family blowouts go, this one has the potential to become pretty ugly.

On Monday night, MILEY CYRUS may have Tweeted a picture of a woman she's accusing her dad BILLY RAY of having an affair with.


The woman's name is Dylis Croman, and she starred with Billy Ray in "Chicago" on Broadway last year.


Here is the tweet:


Photo courtesy of TMZ and Twitter















Wait a minute, didn't Miley's Mom file for divorce already?  So why the threats Hannah Montana?


Later, Miley deleted that post, then Tweeted, quote, "Wtf?  My twitter was just actin all types of cray!"


To be continued.....


Until then, enjoy this slice of Miley: