  A study of energy behavior of the pion spectra and interferometry scales is
carried out for the top SPS, RHIC and for LHC energies within the hydrokinetic
approach. The main mechanisms that lead to the paradoxical, at first sight,
dependence of the interferometry scales with an energy growth, in particular, a
decrease $R_{out}/R_{side}$ ratio, are exposed. The hydrokinetic predictions
for the HBT radii at LHC energies are compared with the recent results of the
ALICE experiment.
