The 29-year-old actress, who is currently living in London, said she always turns to Ora, 25, for advice when she needs it, reported Daily Mirror.
"Rita Ora is one of my close friends - I love her. She is like a second sister. I have a nice friendship with Rita where if someone just needs to talk, you just trust the person. I can call her like that and she can call me like that," Lohan said.
Lohan believes she and Ora get on well because they have have very similar careers with both stars acting and singing.