I'm not sure what you're missing but I just tested it with my "completes 0.24" savesomeone can help me please? I'm on the 105th day of the game. And I have to acquire the cheerleader costume but that doesn't show up in the conversation with Adrianna. I tired all the steps (Walktrough 423-431) and I spoke with Julia (Walktrough 432) and I visited Adrainna at the Studio. What is written in the walktrough should appear in the conversation with Adrianna (walktrough 433.) but there is not. There is only ask about job and chat.
did step 419-432 and got the option to ask about the cheerleader outfit (step 433)
The only thing I can think of is either you skipp steps 419-422 or Kira and Adrianna's point aren't enough
I was able to do with
Kira = 110 points
Adrianna = 225 points
I should note: the number of days your don't matter, it only affects when John and Dannielle make their appearance.