Shia LaBeouf Is Confident in Skin-Tight Purple Leggings

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Shia LaBeouf lets it all hang out.

Shia LaBeouf is not afraid to stand out.

Clad in a mint green Nike tank top, spandex purple Nike leggings and pink-and-blue sneakers, Shia, 28, seemed to be working on his fitness alongside his girlfriend -- his still eyebrow-less Nymphomaniac co-star Mia Goth -- Sunday in Studio City, Calif.

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Very revealing workout pants seem to be all the rage these days, with Mickey Rourke, 61, rocking a similar style -- though in neon green -- in July.

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Who do you think looks better in their awesome aerobic gear, Shia or Mickey?