Lily Allen was forced to pay out £40 to print off a boarding pass before her flight to Dublin last week.
The company have come under a lot of scrutiny over the last few years for its excessive 'hidden' charges which aren't included in the original price.
Ryan Air my have lost the singer-come-designer as a customer after she tweeted that the fee was "unbelievable."
She wrote: "Ryan Air have just charged me 40 quid to print out my boarding pass," followed later by: "Oh, and now they've just taken it off me. 40 pounds for a piece of paper that was mine for approx. 7 mins, wow."
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