  Pion interferometry results from pp and dAu collisions at $\sqrt{s}=200$ GeV
are presented using data from the STAR detector at RHIC. Radii from
three-dimensional correlation functions are studied as a function of transverse
mass. The HBT results from pp and dAu collisions are compared to pion HBT from
AuAu reactions, also taken at STAR.
