An old gun ad:
The tagline for the gun is fits in a pocket.
The woman is wearing a sundress with no pockets.
Ergo, if she’s not going to put it into a pocket, she could opt for something larger or with a larger magazine.
Or, men, you could not leave her pocketless.
(Side note: I swiped this from a 2012 American Rifleman magazine that was in the bottom of my (relatively) recent magazines. Ah, the olden days. It also has stories on Chris Kyle and the 2012 elections which both have disappointing epilogues as we know in 2015.)