  Identical neutral kaon pair correlations are measured in $\sqrt{s}=7$ TeV pp
collisions in the ALICE experiment. One-dimensional K$^0_s$K$^0_s$ correlation
functions in terms of the invariant momentum difference of kaon pairs are
formed in two multiplicity and two transverse momentum ranges. The femtoscopic
parameters for the radius and correlation strength of the kaon source are
extracted. The f${\rm i}$t includes quantum statistics and final-state
interactions of the a$_0$/f$_0$ resonance. K$^0_s$K$^0_s$ correlations show an
increase in radius for increasing multiplicity and a slight decrease in radius
for increasing transverse mass, $m_{\rm T}$, as seen in $\pi\pi$ correlations
in the pp system and in heavy-ion collisions. Transverse mass scaling is
observed between the K$^0_s$K$^0_s$ and $\pi\pi$ radii. Also, the f${\rm i}$rst
observation is made of the decay of the f$_2'$(1525) meson into the
K$^0_s$K$^0_s$ channel in pp collisions.
