Kim Kardashian, 39,celebrates her first child, North West as she hits 7

The 39-year-old reality star took to her social media accounts on Monday to wish her eldest child, North West a happy seventh birthday.

Kim complimented the mini-fashionista on her style while sharing adorable throwback photos of her firstborn.

'Happy 7th Birthday to my first born baby North!' she began, saluting North's 'alien' style.

'I can’t believe you are 7. Crazy how time has flown by so fast like this! You are everything and more than I ever dreamed of! The most stylist [sic] creative Gemini performer ever! I love you to your alien planet and back!'