The optical rest–frame sizes of 10 of the most massive (∼5×1011h70−2M⊙) galaxies found in the near–infrared MUNICS survey at 1.2<z<1.7 are analysed. Sizes were estimated both in the J and K’ filters. These massive galaxies are at least a factor of 4 −1.0 (±1 σ) smaller in the rest–frame V–band than local counterparts of the same stellar mass. Consequently, the stellar mass density of these obje...