  We present wide field (33 X 34 arcmin^2) multiband (BVI) CCD photometry (down
to I <= 20.5) of the very low surface brightness dwarf Spheroidal (dSph) galaxy
Sextans. In the derived Color Magnitude Diagrams we have found evidences
suggesting the presence of multiple stellar populations in this dSph. In
particular we discovered: {\it (i)} a Blue Horizontal Branch (HB) tail that
appears to lie on a brighter sequence with respect to the prominent Red HB and
the RR Lyrae stars, very similar to what found by Majewski et al. (1999) for
the Sculptor dSph; {\it (ii)} hints of a bimodal distribution in color of the
RGB stars; {\it (iii)} a double RGB-bump. All these features suggest that (at
least) two components are present in the old stellar population of this galaxy:
a main one with [Fe/H]~ -1.8 and a minor component around [Fe/H]<~ -2.3. The
similarity with the Sculptor case may indicate that multiple star formation
episodes are common also in the most nearby dSphs that ceased their star
formation activity at very early epochs.
