Lindsay Lohan Vs. Her Dad

Lindsay posted a blog on her myspace celebrity blog basically admitting she has a half sibling that her dad doesn't own up to.

Lindsay writes, "My father just let my family and me know, amongst other things that he had another child after my little sister Aliana"... "Or maybe he had it before Aliana?? Either way, he cheated on my mother and that really sucks."

Lindsay's father, Michael, does not believe Lindsay posted the blog, he believes her gal pal Samantha Ronson is the culprit.

Here's the thing, I thought Lindsay was so over dragging her family drama into the media. She knows posting a blog such as this one is going to get media attention. She even asked her father to stop talking about their family issues to the media... then she goes and does it? This whole thing screams I need me some publicity.