Correlations of two charged identical kaons (Kch Kch) are measured in

pp collisions at sqrt{s}=7 TeV by the ALICE experiment

at the Large Hadron Collider (LHC). One-dimensional KchKch correlation

functions are constructed in three multiplicity and four transverse momentum ranges.

The Kch Kch femtoscopic source parameters R and lambda are extracted.

The Kch Kch correlations show a slight increase of femtoscopic radii with

increasing multiplicity and a slight decrease of radii with increasing transverse

momentum. These trends are similar to the ones observed for pi pi and Ks0 Ks0 correlations in pp and heavy-ion

collisions. However, the observed one dimensional correlation radii for charged kaons are

larger at high multiplicities than those for the two pions in contrast to what was observed in heavy-ion collisions at RHIC.