Lindsay Lohan wants nothing to do with her half-siblings.

The 'Mean Girls' star insists her father Michael Lohan's daughter Ashley - who was born in 1995 to Kristi Kaufmann, who he had a relationship with while separated from Lindsay's mother Dina - and son Landon, 13 months, who he has with girlfriend Kate Major, will never be welcomed into her family.

Lindsay - who has siblings Cody, Ali and Michael Jr. - said: ''My dad has this whole other life with all these other people that he's created...and I do not want to be a part of that..

''They are not part of my life and they never will be.''

Lindsay's comments came on her reality docuseries 'Lindsay' after she had a row with her father over dinner when she asked him to buy a car for 18-year-old Cody.

He protested: ''I have child support...that's supposed to be for the kids.''

Lindsay replied: ''I do not want to talk about your two other random f***ing kids.

''Out of all of us Cody's the one that deserves something the most. It hurts me to see him not getting something that all his friends are getting...he doesn't have a dad to take him to soccer games...he needs his father.''

However, Michael hit back: ''Your mother cut me out of his life.''

Later in the show, the pair also clashed again with the 27-year-old star furious at her father's criticisms of her friends.

She seethed: ''They're people that you don't think were good for people. See, now you're getting me angry - because you weren't good for me for a long time in my life!''

Michael replied: ''Well, if that's what you believe, that's fine, honey, I accept that though. I totally accept that.''

Lindsay later added to the camera: ''So my dad makes a nasty comment about my friends, it hurts me.

''They may go out and do what they want to do but they're not the kind of people who are going to do it around me, and that's what matters to me. They're good people.

''They've been there for me when I didn't have other people that were, you know, when other people weren't.''