As others have posted, watch the pros. We're not pros but we should certainly consider why in all cases the pros ride with their knees in.
I was born slightly pigeon toed. The best cycling shoes I ever owned were a couple pairs of Marresi's because there was a wedge molded into the sole that tipped my foot inward effectively countering my tendency to splay my knees. The only way to comfortably peddle was by mentally focusing on a line of force running down from my hip through my knee, inner ankle and into my big toe.
Now that I've graduated from toe clips and retired the Marresi's I use something called "The Wedge" from
Bike Fit Systems with the full stack of shims between my cleat and sole, thick sides outboard (requiring a longer cleat screw).
Raising your seat slightly will also help for us full-figured bikers (first-hand knowledge) but be aware how much hip-rocking you incur. Spinning at a high cadence will give that away. The hips shouldn't rock very much.