The Mean Girls actress, 22, will film five episodes as Kimberly, Betty's High School nemesis.
Lilo was glowing in her natty Flushing Burgers top, left, while actress America Ferrera as Betty sported her trademark bad hair and garish clothes.
Guest star: Lindsay Lohan (l) filming her guest appearance in Ugly Betty. The hit U.S. show's title character, played by America Ferrara (r)
Ugly Betty will be back on Channel 4 this September, after a mid-season hiatus due to the writers' strike in America.
Lohan's girlfriend, Mark Ronson's DJ sister Samantha, 30, is also in New York and has visited Lilo on the set.
Location: The 'Flushing Burger' branch where Lohan's character works
Hulk to Chelsea is '90 per cent done'
TV Baftas - in pictures
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Ken Clarke: Tories demanding EU poll are extreme nationalists
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First victory for campaign to save famous pie and mash shop -
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