I mean, there is a laundry list of Pop stars who tried to make it in movies. Only two or three were actual draws.
Streisand had the biggest impact. She made better movies that were bigger hits than Elvis' fluff.
You haven't learned by now that Pop stars are not film draws?
Britney Spears was the most famous person on earth in 2002. Crossroads didn't even cross $40 million.