Stunt Breasts

This is either a really good idea or a really stupid idea.

CGI technology is at a point in movies where faces can be digitally added to stunt bodies. We saw this in the Wayans movie, Little Man, and in the Star Wars prequels, where Christopher Lee's face was added to the body of his stunt double to accomplish Count Doku's fight sequences.

Recently I watched Knocked Up for a second time, and it got me to thinking. I noticed that Katherine Heigl was wearing a bra during the sex scenes. In real life, nobody wears a bra during sex unless they are having sex in public. If you are having intercourse with someone in a private scenario like a bedroom, you are well beyond the point of being too bashful to reveal your nipples.*

So if they can digitally add faces to stunt bodies, why can't they digitally add stunt breasts to actresses during sex scenes? Katherine Heigl could have left her bra on during filming, and then stunts breasts could have been added during post-production. Heigl could still feel comfortable filming the scene, while the movie ended up being more believable.

* There are probably women who fetishize wearing bras, and men who fetishize women wearing bras. And I imagine there are a few women out there who leave their bras on just to make their sex life seem more cinematic.