Hayley Atwell's 'Captain America: The Winter Soldier' Cameo Revealed? (PHOTO)

WARNING: Potential spoilers about "Captain America: The Winter Soldier" ahead.

Hayley Atwell was one of the best parts of "Captain America: The First Avenger." Because of the fact that her character was left behind in the 1940s when Steve Rogers crashed, froze and wound up in the present day, however, it seemed unlikely that Atwell would return for the film's sequel. About that: As photographed by an Aol Patch reporter in Cleveland, Atwell was spotted on the set of "Captain America: The Winter Soldier" wearing old-age makeup.

hayley atwell captain america

Whether that means Atwell will appear in the film is unclear; Atwell is set to reappear in the Marvel universe as Peggy Carter in special short film that will appear on the DVD and Blu-ray extras of "Captain America: The Winter Soldier."

Here's a pic, meanwhile, of Atwell from the "Captain America: The First Avenger" red carpet.

hayley atwell captain america

For more on Atwell, head to Patch.

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