Kim Kardashian and her pregnant older sister Kourtney are photo shoot pros!

The sisterly duo rocked 80's-inspired hairstyles while shooting a new campaign for their Sears clothing collection.

Crazy how two girls can wear the same leopard print tuxedo jacket, yet wear it SO differently.

Kim certainly knows how to flaunt her assets. Even sister Khloe pointed that out when she Tweeted, "I mean.... Is there milk in those things???? Glamour puss!"

Pump up the volume, indeed.