I think it's sweet that the man's wife worries about him feeling insecure.
But, if my GF wants to go out with the girls wearing Supa-Slut attire, then by all means!
Everybody, both guys and girls, want to feel sexy. There's not a guy or girl in here that can honestly tell me that their day doesn't get a lil brighter if someone gives them a look that says, "DAYYUM!!".
Between the stresses of work, kids, and the inevitable weight gain that seems to be the result of the two, hearing "you look (insert flattering adjective here)" from your lover of how many years just doesn't pack the same amount of genuine punch as it used to. LOL
It's unfortunate but, we do tend to let others opinions validate us too much. Butcha gotta choose your battles! So, yes...the GF/Wife/Steady FWB going out looking like something out of Quentin Tarantino movie? "Have fun, dear!" Just make sure she's coming home to you. THAT's the red flag.