LORELAI: Leilani, huh? Very exotic name.
EMILY: She’s from Honolulu.
Honolulu, the capital and largest city of the state of Hawaii. Honolulu’s tropical climate, natural scenery, and extensive beaches make it a popular destination for tourists.
Leilani is a popular Hawaiian name (technically unisex, but nearly always given to girls) which can be translated as either “heavenly flowers” or “royal child”.
Lauren Graham was born in Honolulu, and this is yet another reference to her home state on Gilmore Girls.
The Annotated Gilmore Girls 