Is this an adopted English word? Is it not supposed to be "meine Sterne"?
Yeah, exactly, I believe this is adopted from English, used in the 'Dancing with the Stars' sense, while meine Sterne is correct for the stars in the sky.
It's an adopted word. You'd translate "rock star" to "Rockstar" in german and use "Stern" in that context only in the form of "Sternchen" for "starlet".