Lindsay Lohan will attend tomorrow's Hollywood premier of her movie with Charlie Sheen, Scary Movie V. However, despite the movie studio's requests that the co-stars walk the red carpet of the movie premiere together, Lindsay Lohan and Charlie Sheen have refused, and will walk the red carpet separately, according to E! News.

A source told E! that Dimension Films, which produced Scary Movie V, asked Sheen to walk the red carpet with Lohan because it would make for great photos. However, Sheen hasn't agreed; rumors have recently suggested that Lohan's relationship with Sheen isn't all that great at the moment.

Lindsay Lohan allegedly upset the cast and crew of Sheen's show, Anger Management. Lohan arrived late for the shoot of her guest spot and allegedly 'stole' items from wardrobe so she could wear them clubbing that night.

But, Lohan doesn't really seem to have great relationships with anyone; she's even had problems with Dimension Films. Lohan was reportedly upset when the movie studio didn't inform her that they had re-edited one of her scenes with Sheen to make a joke about her legal problems. Dimension also released a mock advertisement for the "Lindsay Lohan Ankle monitor Collection," a spoof featuring a woman in a gold ankle bracelet with the initials "LL" with a tagline that reads, "If you think this is effed up...wait 'til you see Scary Movie V."

Lohan's red carpet appearance will occur just three weeks before she will enter court-mandated rehab on May 2 for 90 days. She recently told David Letterman that she thinks rehab will be good for her. "I don't think it's a bad thing. I think it's a blessing, not a curse."

Right after her teary interview with Letterman, Lohan went partying at a NYC Chelsea club called 1Oak. She appeared to be the complete opposite of the composed, humble actress that appeared in the interview, throwing glasses and yelling when her former assistant Gavin Doyle attempted to say hello.

An insider told the Daily News, "He tried to come over to her and say hi. She was at another table and she went ape s---. He attempted to approach the table and she started throwing stuff. She was throwing plastic glasses and freaking out, yelling."

Granted, Doyle and Lohan have had their past issues; Doyle was allegedly willing to cooperate with L.A. police against Lohan's case last month and Lohan has attempted to strangle Doyle with her own scarf.

Lohan's lawyer Mark Heller told the Daily News that she will likely enter a strict rehab facility in Westhampton Beach, New York, unlike her last rehab stints in lavish facilities in Malibu and Palm Springs.

Hopefully Lohan will take advantage of rehab this time; she has attempted to get clean through rehab seven times in the past, according to New York Daily News.