UPDATE: A source confirms exclusively to E! News that Lohan and Sheen both will attend the premiere, but despite attempts by the studio to have them walk the carpet together, each will arrive and walk separately.
Lindsay Lohan's pre-rehab tour rolls on.
As E! News first told you, the embattled starlet will attend tomorrow's Hollywood premiere of her new flick, Scary Movie V.
Now comes word from a source that she may well attending the premiere with costar Charlie Sheen. However, a rep for LL says the it's not "100 percent" certain they will be walking the carpet together.
A Sheen source says that the studio, Dimension Films, has asked Sheen to walk with Lohan because it would make for a good photo op, but he hasn't signed on yet.
It's not like Lohan's relationship with Sheen has been too solid lately.
She reportedly upset cast and crew when she recently shot a guest spot on his show, Anger Management.
Not only did she hold up production because of her alleged tardiness, but there were also questions raised about whether she was allowed to walk away with bracelets from the shoot.
Lohan's Scary Movie experience hasn't been without controversy either. She was reportedly upset when the studio didn't let her know that they had reedited one of her and Sheen's scenes to include a joke about her probation problems.
And most recently, Dimension released a mock advertisement for "The Lindsay Lohan Ankle Monitor Collection." The spoof features a woman wearing a gold ankle bracelet engraved with the initials "LL" and a tagline that reads, "If you think this is effed up…wait 'til you see Scary Movie V."
LiLo's big movie night (Page Six was the first to report her possible plans with Sheen) will come just about three weeks before she is set to enter court-ordered rehab on May 2 for 90 days.
—Additional reporting by Ken Baker
(Originally published on April 10, 2013, at 12:28 PT.)