  We discuss $\btorho$ form factors within the framework of perturbative QCD,
including the higher twist contributions and study the validity of such an
approach in calculating quantities such as form factors, which in principle and
quite generally are thought to be completely non-perturbative objects and are
expected to receive large contributions from the non-perturbative regime in the
calculations. It is shown that including the Sudakov and threshold resummation
effects, the general expectations of the pQCD approach are clearly met and the
form factors do indeed receive most of the contribution from the perturbative
region. We do not make an attempt to precisely evaluate the form factors but
rather try to study the gross features and behaviour of the same. We also find
that use of single wave function for the B-meson may actually underestimate
various quantities. The results clearly indicate the validity and reliability
of pQCD calculations, at least in this particular case.
