Troubled actress Lindsay Lohan may not be getting the plum film roles anymore, but she might bring in millions in a lawsuit over a widely viewed television ad.

Lohan, 23, has sued online brokerage E-Trade for $100 million alleging that a company ad in which a baby named Lindsay is referred to as a 'milkaholic' violated her rights, according to the New York Post Tuesday.

The ad debuted during the Super Bowl in February and featured a baby boy apologising to his girlfriend for standing her up because he was too busy trading shares. 'And that milkaholic Lindsay wasn't over?' the baby girl asks before another baby girl pops into the screen saying, 'Milk-a-whaaat?' It was the latest in a series of ads featuring the babies in a bid to show the ease of the online trading system.

In the lawsuit filed Monday, Lohan's lawyer said the ad was a clear reference to her client, who has a dismal record of substance abuse.

'Many celebrities are known by one name only, and E-Trade is using that knowledge to profit,' Lohan's lawyer, Stephanie Ovadia, said in a statement. 'They're using her name as a parody of her life. Why didn't they use the name Susan? This is a subliminal message. Everybody's talking about it and saying it's Lindsay Lohan.'

A statement from the ad agency that produced the commercial denied that it was referring to Lohan, and said they 'just used a popular baby name that happened to be the name of someone on the account team'.