Lindsay Lohan, whilst filming Chelsea Lately, was back to fighting form - quite literally. The 27-year-old actress may have just left rehab but she's not holding back when it comes to Kristen Stewart. 

Lindsay Lohan
Lindsay Lohan at the premiere of Scary Movie 5, held at the ArcLight Cinema in L.A.

Last week, Stewart was caught on camera swearing at a TMZ photographer in L.A. Lohan, whilst guest hosting the talk show, felt the need to comment indirectly on Stewart's limited acting range: "I'm just excited that Kristen Stewart, you know, finally showed some emotion." Then on the Twilight stars personal life, which included a relationship with Snow White and the Huntsman director Rupert Sanders, on which 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."

Lohan did attempt to atone for her comments by claiming "I really do love her. She's awesome. I'm a Kristen Stewart fan." However, the damage by this point already seems to have been done.

Kristen Stewart
Kristen Stewart at the London premiere of The Twilight Saga: Breaking Dawn - Part 2.

Hopefully, Stewart will excuse Lohan for her comments as The Canyons actress has had a difficult time lately. Lohan has just completed a 90 day court ordered rehab session at the Cliffside Malibu Rehab Center and has been order to continue in therapy for a further 15 months. In terms of her career, Lohan's latest film The Canyons has been slated by the critics and flopped in the box office.

Lohan, apart from the Stewart comments, was apparently on good form whilst filming the talk show on Thursday 1st August. She joked about her "90 day court order vacation" and was "funny", according to sources speaking to TMZ. With any luck Lohan will stay on the road to recovery.

Lohan guest hosts Chelsea Lately which airs tonight (Monday 5th August) on E! at 11pm.

Lindsay Lohan
Lindsay Lohan leaving the Ed Sullivan Theater, New York after filming The Late Show With David Letterman.