Blake seems to never get it wrong in the style stakes but we seriously think she's outdone herself with this get-up. Could she be more perfect?
The actress - who is currently pregnant with her second child with Ryan Reynolds - looked stunning in a pale duck-egg blue gown. Featuring a scoop neck and tiered ruffle bottom, the girly number was embellished with delicate floral beading. Dream dress? Yep!
Keeping the focus on the frock, Blake wore her blonde tresses up and swept away from her face with a simple silver Alice band. Her make-up was fresh and natural, while her accessories included silver earrings and a glam, statement bracelet.
And like the pro she is, the former Gossip Girl star co-ordinated with duck-egg blue and silver hued heels.
Blake was attending the premiere of new film Slack Bay, which was being previewed at the fancy annual film festival. Other stars who attended included Cheryl, who also looked gorgeous in a floral embroidered number.
Earlier in the week, Blake graced the Cannes red carpet looking hot in a red jumpsuit and showing a hint of her baby bump. Rumours of Blake and Ryan having their second child first emerged last month and they haven't denied the news.
They first became parents back in December 2014 when they had a little girl named James. And now it appears they're expanding their brood - exciting!