This is a wrap gown and a v-neck outfit that Claire Danes picked at the Golden Globes 2013. This wrap style Versace dress is ideal for the curvy ladies and women with a bit of extra tummy. It actually emphasizes curves and might help you to hide some extra tummy if that is your case. Look below how in the side picture we can see how the dress creates a visual effect of making her look slimmer in her tummy area.
Claire went red and sleeveless to the red carpet, showing off her amazing body even when she just had a baby not long ago.
I suspect that Claire is wearing Spanx or any other shapewear here.