It's a great choice for a nighttime event where you're being honoured, no? Demure with the neckline and perfect length for a cocktail event, but still as dazzling and fun and womanly as you'd like it to be. It's a departure for JA, but she wears it well and it makes you question why she's not dressed like this all the time. A little ... businessy. But still sparkly! She's been honoured for the Women Doing Good Awards by Self magazine in the US.
It's a very different look, say, compared to ...

I mean, ramalamazingzong! Who went and got her an aqua fitted dress to step into complete with silver shoes and the blonder locks she's currently sporting? That's a bombshell look if I ever saw one.
Which do you prefer?
Personally, I LOVE the top look. Love love. It's just a nice way to show off your fabulousness without having to flash your figure. Sure, the below is sexy, but it's almost ... run of the mill. Ordinary. Any Playboy bunny worth her weight in silicone could pull it off. The top look is something else entirely.