Kim Kardashian made her 'ride or die' pal Natalie Halcro's birthday a memorable one by hosting a spa day at SKIMS headquarters in Los Angeles.The SKIMS founder, 42, gave a peek at the extravagant festivities in a clip shared to her Instagram Story that highlighted the over-the-top decor, custom confections and a balloon sign that read: 'No boys allowed'Natalie is a part of Kim's inner-circle and famously appeared on the reality show, WAGS, which aired on E! for just three seasons from 2015 to 2017.Kim kicked off the party tour by walking her 343 million through the front of the warehouse where various pink, white and silver balloon arrangements were scattered throughout.'Happy Birthday Nat' was spelled out in large, metallic pink balloons that greeted guests upon entry. Birthday girl: Kim Kardashian made her 'ride or die' pal Natalie Halcro's birthday a memorable one by hosting a spa day at SKIMS headquarters in Los Angeles The SKIMS founder, 42, gave a peek at the extravagant festivities in a clip shared to her Instagram Story that highlighted the over-the-top decor, custom confections and a balloon sign that read: 'No boys allowed' Kim then pans past her custom Rick Owens lounge area that's positioned directly in front of plasma screen TV displaying a striking photo of the birthday girl.The SKIMS CEO's little sister Khloe Kardashian took over the tour duties by providing footage of the array of delectable treats at their disposal on her own IG Story.