10/26/2011 at 11:00 AM EDT
Rachel Crow received glowing reviews from the judges on The X Factor
's first live show Tuesday with her mash-up of Justin Bieber's "Baby" and the Supremes' "Where Did Our Love Go." But Simon Cowell
, Paula Abdul
, Nicole Scherzinger and L.A. Reid are also smitten with the 13-year-old charmer because she's just so darn cute – and likable.
L.A. said she could have an acting career. Paula even suggested she run for president. The singer, whose confidence shined through during her very first audition
, was also showing off a slimmer figure Tuesday night.
Crow spoke with PEOPLE about how she lost weight 15 lbs. in just two month and why, at such a young age, she did it:
Word is you have lost weight since your audition on The X Factor?
Yes, I lost 15 pounds in about two months.
How did you do that?
I just did a lot of cardio and working out and my mom was with me all the way so I am really happy. Food used to be everything to me but now it is not. It is more like I eat for survival. So now I am good.
Why did you decide to lose weight?
I decided to do it because I thought, "You are going to be on TV, you gotta clean up your act. You have to give it your all." I really went all out. Was this your decision or did you get pressure from someone to lose weight?
Not at all. It was my decision 100 percent. I told my mom let's go out and see if I can do something about my weight. She was 100 percent behind me.
Do you want to lose more weight?
I don't think I am going to lose any more weight because if I did I wouldn't be Rachel. But I am definitely going to keep up on my eating regimen and try to keep going [with my exercise].
L.A. Reid said you would also make a great actress, would you ever want to act?
Yes, of course. I love acting. I think it is fun. But singing is definitely my number one passion.