Ugliness thou art Lindsay Lohan sez America Ferrera.

Things allegedly got so out of control that LiLo’s intended guests shots on Ugly Betty have been cut after six eps to four, according to sources.

 "Lindsay would show up every day with an entourage of people," a production insider told the NY Post. "She smoked 24/7, and after she left, they had to repaint her dressing room it was such a mess."

Needless to say star America Ferrara was livid at Lilo’s diva antics.

Lohan "would obsessively cut pictures of herself out of the tabloids like she was creating some sort of scrapbook and refused to go on set until America was there – it was a power play," the NY tab’s source said.

A much disputed "undies/no undies" claim-counterclaim is for the ep "Granny Pants" in which a revenge driven Ferrera pulls Lindsay’s pants down and – depending on which report you care to believe – Lilo was a) undie free b) wore a G-string. 

And then:  a) Lindsay cried or b) didn’t cry.

Separate reps for both Lilo and Ugly Betty denied everything, insisting a good time was had by all.

In fact, much of the blame was laid on the Fox show Fringe which was sharing a dress room with the Betty bunch.

Heads up, Joshua Jackson – you got more than mad scientists creating black holes to vex you now!