‘Mean Girls’ celebrated its eighth anniversary and even though fetch never really caught on, Lindsay Lohan is indeed ready for her comeback as Elizabeth Taylor-filming for the Lifetime biopic is set to begin June 4th. And production for the flick’s going perfectly as planned-the location has moved from Canada to LA and insurance policies are in order, but there’s one big piece to the puzzle producers are still missing-who will play Richard Burton, Elizabeth Taylor’s fourth (and fifth) husband. A source close to production said “producers of the Lifetime biopic ‘Liz and Dick’ have still not cast the actor to play the role of Richard Burton.” Which seems fairly problematic considering there are only 34 days before filming begins. “As of today there is no final casting. They have been looking at a lot of actors,” the production-savvy source revealed. The source would not mention who, specifically, producers have their eye on. All the hype’s been around casting Lindsay, but this is not the Elizabeth Taylor solo biopic-the role of Richard Burton is equally as important since the flick chronicles ‘Liz and Dick’s chaotic union. Still, the source confirms shooting is indeed “set to start in L.A. in the first week of June”. About the reason behind the hold-up, the insider reveals the casting’s not as easy as it seems: “Everyone wants to make sure the male lead not only can pull off Richard Burton, but that they have great chemistry with Lindsay. It is a double-whammy casting challenge.”