If I caught T staring at my chest I'd be so out of there...
Fortunately my T looks 50% into my eyes/at my face, 49% around the room and only less than 1% are casual glances at my body- like if I say my arm hurt and rub it he'll look.
I have the same thing about shirts touching my neck... however, my small breasts are safely tuck into a sports bra
That dress looks fine to me, though it really depends how good it fits you... I'd say wear whatever you would wear to work is a good suggestion.