Here is how you become a pop star.
1. Go to record company.
2. Say “I am a celebrity can I put a single out?”
3. Repeat 1 and 2 until someone says “Yes”
4. Release record.
5. If the record is good enough* you will now be a pop star by dint of being famous already. If it isn’t you won’t.
Worked for Kylie and Jason, it’ll work for you.
*sadly this utopian claim is actually untrue. Paris Hilton’s “Screwed” is a great little pop record, a mite self-knowing but at least it doesn’t duck out of the ‘made-by-someone-famous’ factor entirely. It has stiffed hugely.