The union that represents the attendants say the wool clothing is to blame for a number of health issues.
RELATED: Man forced off American Airlines plane in Dallas due to weight
They include: headaches, rashes, burning skin and eye irritations.
A spokesman for the Dallas-based carrier says evaluations on the uniforms are being performed.
But American says there's no need for a recall of the garments just yet.
OTHER: Baby born on Southwest Airlines flight from Philadelphia to Orlando
More than 16-hundred complaints related to the uniforms have been reported thus far.
The vendor of the clothing, Twin Hill, also received complaints about uniforms it made for Alaska Airlines in 2011.