While the lawsuit is flimsy, Rockstar has been accused of ripping off Lohan's likeness: "[They] incorporated her image, likeness, clothing, outfits, [Lohan's] clothing line products, ensemble in the form of hats, hair style, sunglasses." Lacey Jonas also suffers from an eating disorder, which Lohan did fight in the past, as well.
Working against Lohan and the lawsuit is that fact the model Shelby Welinder was paid by Rockstar Games to have her likeness used for the game, and she has an invoice to prove it.
Rockstar made over $1 billion for the game, making over $800 million in its first week for the biggest entertainment launch of all-time.
Source:
Gamerant