lautnerpic1230.jpgTaylor Lautner may be one of the most popular movie stars right now ... but that doesn't mean an Orange County RV dealership will jump through hoops for him!

Lautner, 18, is suing McMahon's RV, located in Irvine, for not making a June deadline to deliver a $300,000 custom Coach RV.

In the lawsuit, the Twilight star says the customized 2006 Affinity Country Coach RV was going to be used as his dressing room while he was on set for his latest movie Abduction. However, the promised delivery date came and went.

No word on whether Lautner will have his custom motorhome delivered in time for his upcoming Breaking Dawn shoot.

What's a young star to do without a custom $300,000 dressing room?!