The invention relates to a light treatment system (10, 12, 14). The light treatment system comprises an elastic sheet (20) connected to a deformable rim (30). The deformable rim comprises a perimeter having a substantially fixed length. The elastic sheet comprises light emitting means (40, 42, 44) configured for illuminating a treatment area (100), the elastic sheet being configured for being elastic in a direction substantially parallel to the elastic sheet for reducing the occurrence of folds in the elastic sheet when reshaping the deformable rim, and being configured for being conformable to the treatment area. An effect of the light treatment system according to the invention is that the elastic property of the elastic sheet enables the deformable rim to be deformed in substantially any direction while the elastic sheet remains substantially conformable to the treatment area. Consequently a substantial uniform illumination of the treatment area is ensured while allowing a well defined fit to substantially any body part.