I'd say, " Thank you, thank आप SO much!!! I प्यार आप with all my दिल and soul!!! आप are the only reason I'm alive and the reason I want to follow my dreams!!! आप are my IDOL!!! Thank आप for being alive and not conforming for anyone else because आप WERE BORN THAT WAY!!!"
या at least I'd try to, through my tears of pure joy and प्यार for her.
The first thing I'd say would be "thank आप for making music" because I think my life is better since I have her music. Then I'd tell her I प्यार her SO SO much and that she's my idol. And then I cry and cry. I'd tell her that she is one of the very few persons that inspires me and that she means everything to me. All this is what I think I'd want to say but if I really had her in front of me I'd be speechless... not able to think straight...
I will scream liek a little girl: "AAAAAAAAAAA GAGA!!!! I प्यार You!!! आप are Great singer!!!! Your संगीत is so cool!!! I प्यार all of them!!! OMG!!! Thank आप for YOU!!! " ))))))))))))) XD
idk what i would say, i would either 1. faint 2. stand there like an idiot 3. scream and yell and literally make my bff's ears bleed. 4. probly tell her that she is the reason i प्यार संगीत and प्यार to sing. that she is my influence to become a pop तारा, स्टार just like her :) i luv Mama!