I'm obsessed with this Alice + Olivia v-neck dress. I tried it on in Saks, but didn't buy it because I wasn't happy enough with the sale price. Around Christmas, you need to justify spending hundreds on yourself ($50 less, and it would've been well justified).
The fit is of this dress is super-flattering. It comes with a leopard belt that looks great, but for more versatility, I'd pair it with a different belt. The bottom is sort of a shimmery sweater knit and the top is black jersey. I would definitely wear this to work too with a boyfriend blazer or cardi.
Speaking of Alice + Olivia, I just bought their 'Essex Lace Wedge' from Payless for $19.99. Now that's a bargain! They're pretty fabulous and look great with denim or dresses and tights. I also think that wedges are a little bit more comfy than heels, so it's nice to find a pair to wear in the cold months.