Stewart was recently video tapped abusing a photographer on road for no reason and telling him that he did not deserve to breath in the same air as her.
Lohan, who recently got discharged from Cliffside Malibu rehabilitation centre, did not miss the chance to poke fun at Stewart's action, reports contactmusic.com.
Talking about Stewart, who generally maintains a poker face, Lohan said on a chat show: "I'm just excited that Kristen Stewart, you know, finally showed some emotion."
Stewart's four-year-old relationship with actor Robert Pattinson ended when she was caught cheating on him with married director Rupert Sanders.
Commenting on her personal life, Lohan said: "I will say this, of course she hates photographers, they got a picture of her kissing a married man in a Mini Cooper."