what workout can widen the chest and abs best instead of the thicken it?

not that there’s anything wrong with a thick body..i just want to widen my body because i want to look a size bigger..
the workout i do now..
day 1. flat, incline bench press, bench flyes
day 2. wrist curl, bicep curl, pullover
day 3. rest
day 4. dumbbells situps, squats
day 5. rest
back to day 1.

which exercise is best for widening the chest and abs?