We're not sure if we've ever seen Kim Kardashian as happy as we have since she began dating rapper Kanye West... and were so glad to see her happy. Saturday night Kim and Kanye attended the yearly Halloween bash thrown by Midori. Kim shared some pictures of the festivities with her fans on Instagram, here's what she had to say:

"Me and my Captain! I’m off to the Midori Halloween Party in NYC! So excited! What do you think of my costume? I’ve always been fascinated with mermaids! What are you guys doing this weekend to celebrate Halloween? Xo"

Our first thought was that Kanye must really like her because we can't see him dressing up like this for many other women. We think they look super cute in their costumes! What do you think of Kim and Kanye's Halloween couples costumes?