  We study non-axisymetric features of 3D line driven winds in the Sobolev
approximation, where the optical depth is calculated using the full velocity
gradient. We find that non-axisymmetric density features, so called clumps,
form primarily at the base of the wind on super-Sobolev length scales. The
density of clumps differs by a factor of $\sim 3$ from the azimuthal average,
the magnitude of their velocity dispersion is comparable to the flow velocity
and they produce $\sim 20\%$ variations in the column density. Clumps may be
observable because differences in density produce enhancements in emission and
absorption profiles or through their velocity dispersion which enhances line
broadening.
