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Here we perform a Kaluza-Klein dimensional reduction of Vasiliev'sfirst-order description of massless spin-s particles from $D=3+1$ to $D=2+1$and derive first-order self-dual models describing particles with helicities$\pm s$ for the cases $s=1,2,3$. In the first two cases we recover known(parity singlets) self-dual models. In the spin-3 case we derive a new firstorder self-dual model with a local Weyl symmetry which lifts the tracelessrestriction on the rank-3 tensor. A gauge fixed version of this modelcorresponds to a known spin-3 self-dual model. We conjecture that our procedurecan be generalized to arbitrary integer spins.

Self-dual models in $D=2+1$ from dimensional reduction