Lindsay Lohan has poked fun of Kristen Stewart.

The 27-year-old actress - who has left rehab last week after a 90-day court-ordered stint - is seen mocking the 'Twilight' actress in a preview clip for her gig guest hosting chat show 'Chelsea Lately' tonight (08.05.13).

Discussing a recent incident in which the famously glum-looking star yelled a photographer, Lindsay scoffed: "I'm just excited that Kristen Stewart, you know, finally showed some emotion."

When the other hosts appear shocked, Lindsay backtracks, saying: "No, I really do love her. She's awesome. I'm a Kristen Stewart fan."

However, the 'Mean Girls' star then takes another pop at the 23-year-old actress, joking about the infamous paparazzi shots of her kissing 'Snow White and the Huntsman' director Rupert Sanders, which ended both his marriage and her relationship with Robert Pattinson when it was made public.

She laughed: "I will say this, of course she hates photographers - they got a picture of her kissing a married man in a Mini Cooper."

Meanwhile, Lindsay is set to open up about her own demons in an in-depth interview on 'Oprah's Next Chapter' and a newly-released preview shows the chat show legend probing the redhead with some tough questions.

Oprah Winfrey asks, "Are you an addict?", before saying, "What does it feel like to be both an adjective and a verb for child-star-gone-wrong?"

Linday will additionally film an eight-part documentary about her life for Oprah's channel OWN, for which she has allegedly received a $2 million pay check.