It certainly is (it's mine), but it's a rare one. More common spelling is "Alana." I've never met another "Alanna," but I have met one or two "Alana's." Either way, the name is usually mispronounced the first time.
-Alanna
Alanna Dergan's birth name is Alanna Brown.
Alanna Savage's birth name is Alanna Elizabeth Savage.
Alanna Sampietro's birth name is Alanna Gabrielle Sampietro.
Alanna Ubach's birth name is Alanna Noel Ubach.
Alanna Levy's birth name is Alanna Nevada Levy.
Alanna Yudin's birth name is Alanna Stacey Yudin.
Alanna Blair's birth name is Alanna Rose Blair.
The name "Alanna" is pronounced as "ah-lah-nah" in French.
yes Alanna the name is a classic but it is also very unique name and special and it is also a girls name and actually I the person who is answering this question is named Alanna.
Alanna Ackerman's birth name is Jade Wolfe.
Il mio nome è Alanna
Alanna.