Sweet! Kanye West surprised hubby Kim Kardashian with their first vacation since the birth of their baby boy Psalm on May 9.

Kim Instagrammed some pix and video of what was one of Celine's last performance dates at her eponymous residency, captioning one, "He surprised me with a date in Vegas with @celinedion." And, "5 years ago today I married my best friend ... KIMYE 4 EVA."

Meanwhile, Kim has been working on a side project ... her friend Paris Hilton's music video for the single, "My Friend's Ass." Gee, wonder what her inspiration was for that! We LOVE this f-ing song!!!!