What is the proper way to say "Happy Birthday Beautiful"?

Question

In context, I want to tell a very close friend of mine "Happy Birthday Beautiful". It is her birthday AND she is very beautiful. Spanish is her "native" language, but speaks English well enough that I rarely try to speak to her in Spanish. "Happy Birthday Beautiful" would be an enjoyable surprise... I hope. Thanks.

Answer 1

Feliz cumpleaños, mi bellisima.

Answer 2

Feliz cumpleaños = Happy Birthday

For "Beautiful" you can use any of the following: preciosa, linda, hermosa, bella