How do you say britney in spanish?

Honestly you can't "say" it in spanish. The spelling doesnt change, along with any other name, its just the way u pronounce it. This is because certain letters in spanish are pronounced differently then they are in english. For example V is pronounced as B. and J and h's are often times silent. For the most part, if you asked someone who spoke only spanish to say Britney Spears, it would sound very close to the way you say it. especially since she is famous.