It’s our one requirement. You hear that Betty producers? Our ONE requirement!

Lindsay Lohan has also been asked to be on the show for a multi-episode arc. Although her part will probably be horribly written with no celestial/planetary love-making on top of tamed animals whatsoever, she took them up on it anyway. Now everyone on-set regrets offering her the part, and her six episode stint has been hacked down to four just to get her out the door a little faster.

The former and future straight Ms. Lindsay Lohan has a lot on her plate nowadays. Not only will she single handedly drag Barack Obama all the way into the presidency of something or other, but she also has to constantly remember to publicly hate her dad every chance she gets – and that’ll just take a toll.

We imagine that is exactly what happened on the set of Ugly Betty, a show that revolves around the misgivings of a rather large toad, from all we can tell. Lohan was supposed to be on set for six entire episodes, but folks say she clashed to much with the show’s star, American Ferrari. Or something.

Here’s what Page Six knows:

“IT got so ugly on the set of “Ugly Betty” between Lindsay Lohan and the popular ABC show’s star, America Ferrera, that Lohan was cut from an agreed-upon six episodes to four. One production source said, “It was a mess. Lindsay would show up every day with an entourage of people. She smoked 24/7, and after she left, they had to repaint her dressing room it was such a mess.”"

And what specifically happened on the set to merit Lohan’s rapid ejection from the building? Something about smoking all the time, making that Ferrari girl do things first, and constantly clipping pictures of herself out of tabloids. Also there were reports about Lindsay climbing onto the hanging lights and liquid pooping straight onto a fast-spinning ceiling fan.

Things like that wouldn’t really happen if Sam Ronson would just hide the stool softener. Seriously Sam – at least do it on work days.

It's been reported that Vince Vaughn and Reese Witherspoon keep clashing on the set of Four Christmases, thanks to Reese's insistence that each scene is planned and perfected in advance being at direct odds with Vince Vaughn's preference to just roll up at the last minute and yammer stuff off the top of his head. One thing's for sure – Reese Witherspoon and Vince Vaughn had better fall in line pretty quickly and decide whether they want Four Christmases to be hammy and overacted or lame and half-hearted, because if they're both pulling in different directions then the movie runs the very real risk of being neither of those things at all.

Woe betide any of Vince Vaughn's co-stars, that's our warning. Look at the evidence - Owen Wilson was in Wedding Crashers with Vince Vaughn and he tried to kill himself. Jennifer Aniston was in The Break-Up with Vince Vaughn and they ended up doing it. We don't know which of those is worse.

And it doesn't stop there. Before she was in Fred Claus, Rachel Weisz was an Oscar-winning serious actress, but thanks to Vince Vaughn her latest film sees her babbling in one of the most badly-defined cockney accents we've heard this side of Ocean's Thirteen. So Reese Witherspoon had better watch out unless she wants to end up almost dead, sexually attracted to Vince Vaughn or cockney now that she's co-starring in a movie with him.

That's unless she stabs him to death first. Vince Vaughn and Reese Witherspoon are starring together in Four Christmases, a movie about how hilarious it is to visit other people for Christmas especially when each of the people you visit is a broadly-drawn comedy stereotype except the last one who's probably a bit sad and heartbreaky. Four Christmases also stars Jon Favreau, Tim McGraw and Dwight Yoakim, but that's not important, because all the talk at the moment is about how much Vince Vaughn and Reese Witherspoon hate each other.

The Vaughn/ Witherspoon clash is all to do with preparation, apparently. Reports suggest that while Reese Witherspoon prefers to rehearse and rehearse to define nuance and subtlety, Vince Vaughn likes to barge on set as the cameras start rolling and make up a lot of fast-talking nonsense that hasn't got anything to do with anything. According to a source:

"Vince rolls onto set in the morning looking like he just came in from a night out, while Reese will arrive early looking camera-ready. Then Reese tries to force Vince into blocking out each scene and running through their lines as Vince tries to convince her that he's an ad-libber and wants to play around and see where the scene goes. She's a one-take perfectionist and Vince likes to try it a few different ways. Sometimes Vince will be standing behind her and he has this look on his face that he just wants to kill her!"

It's a tricky predicament, that's for sure. One the one hand you've got an Oscar-winning actress and on the other hand you've got an actor whose instincts have been proven time and time again. Both have a perfectly valid argument and both also have the ability to tear the movie apart. That's a worry, but just think how much more of a worry it'd be if all normal people hadn't already been so turned off by Fred Claus that they've decided they'd rather bury their heads in a snakepit than watch another Vince Vaughn Christmas movie in their lifetime.

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Report: Reese Witherspoon, Vince Vaughn Clash on Set – Fox