She is technically dead so she doeasnt age, there for she doent have a birthday. Evan if she did it is not mentioned in the book, or atleast i dont think it is. Your best place to look would be the part in Twilight where Edward tells Bella about Carlisle's past in the chapter Bella first meets the Cullan's. Hope this helps :) OH I JUST FOUND IT!!!! She was born in 1915, but there is no real month or date. Um, important edit: EVEN if you are dead, technically you still have a birthday as you must have been born to die :P
Yes.
no it's in october October 10, 1915
black
October 10, 1915 http://www.facebook.com/pages/Rosalie-HaleNikki-Reed/47540827172
The Hales in Twilight are the Cullen family, who are vampires. They are led by Carlisle Cullen and include Edward, Alice, Jasper, Rosalie, and Emmett. They are known for their extraordinary beauty and abilities.
October 10, 1915 http://www.facebook.com/pages/Rosalie-HaleNikki-Reed/47540827172
Yep
Her birthday is 4-15-1915.
October 10, 1915 http://www.facebook.com/pages/Rosalie-HaleNikki-Reed/47540827172
Nope, April
Looking at herself and reading fashion magazines
No, it never says the day.