  We employ models from effective two-body light-cone wave functions (LCWFs) to
provide a link between generalized parton distributions (GPDs) and unintegrated
parton distribution functions (uPDFs). Since we utilize the underlying Lorentz
symmetry, GPDs can be entirely obtained from the parton number conserved LCWF
overlaps. This also allows us to derive model constraints among GPDs. We
illustrate that transversity distributions may be rather sizeable.
