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/ Source: TODAY
By Jeff Rossen and Josh Davis

Several weeks ago, Rossen Reports looked at a lawsuit alleging that Starbucks underfills its hot lattes. Now a Starbucks customer in Chicago has filed a new class-action suit saying that the coffee company underfills its cold drinks by adding too much ice to them. She's demanding $5 million.

The lawsuit includes a photo of a Starbucks cup with black lines, claiming that they are fill lines and that baristas are instructed to fill the rest of the cup with ice.

"This could be a valid argument," NBC News legal analyst Karen DeSoto told TODAY national investigative correspondent Jeff Rossen. "The plaintiff clearly believes that this is an admission that Starbucks knew that they were doing something wrong."

Starbucks tells NBC News that the suit is "without merit. Our customers understand and expect that ice is an essential component of any 'iced' beverage."

Both lawsuits are in their early stages.

To suggest a topic for an upcoming investigation, visit the Rossen Reports Facebook page.