Nearly all in app purchases in KKH should remove ads, but these are some that will not remove them:   
  

  • Quick-Charge Energy Bonus
  • Quick-Charge Energy Bonus 2
  • Rising Star Pack
  • Special Bonus
  • Rising Star Special


Buying a total of US$2.00 or more worth of any of the other in-app purchases, will remove ads.   Note that the ads that are removed are third-party ads.  You will still see important announcements from Glu about events and sales related to Kim Kardashian Hollywood.

Also: if you decide to restart the game though the Options menu, or reset your device, the ads will be reset as well, so you will see ads again.