Fox News reports that allergies may play a role in Britney Spears' aversion to wearing panties.

A source in the wardrobe industry claims that Britney has suffered from allergic reactions to underwear in the past:

‘Britney has sensitive skin all over. We tried lots of different materials, but sometimes she would get a bit of a reaction, which naturally is very uncomfortable, especially when she would be on stage under the hot lights performing. All that sweating makes things worse.’

At this point, the pantyless escapades of Lindsay Lohan and Paris Hilton have not been attributed to underwear allergies.

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