As it is of Spanish origin and the e makes an ay sound in Spanish, the pronunciation is Ay-lay-nah. However, it is commonly pronounced with more of an e sound at the beginning, in the US at least.
As it is of Spanish origin and the e makes an ay sound in Spanish, the pronunciation is Ay-lay-nah. However, it is commonly pronounced with more of an e sound at the beginning, in the US at least.