  The high-statistics data sets collected by the LHC experiments during the
heavy-ion runs allow for a detailed study of the azimuthal anisotropy of
charged particles. This report presents the selected results of $v_{n}$
measured in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV and Xe+Xe
collisions at $\sqrt{s_\mathrm{NN}} = 5.44$ TeV, with emphasis on the higher
order Fourier coefficients, $v_{n}$, sensitive to initial state fluctuations of
the medium created in ultra-relativistic heavy-ion collisions.
