Billy Joel's separation from wife No. 3 Katie Lee sure doesn't seem to be affecting the moods of his daughter or wife No. 2!

Christie Brinkley and her daughter Alexa Ray Joel both attended the Hamptons' Starlight Ball benefit for the Steven J. Ross Scholarship Fund, on Saturday night. The Steven J. Ross Scholarship enables one quarter of the prestigious private school's student body to receive financial assistance.

This year Martha Stewart was honored with a scholarship in her name, and the evening's highlights included a comedy routine by Saturday Night Live's Seth Meyers and musical performances by Alexa Ray and James Ingram.

And the ear-to-ear grins of the current and former Joel?


PHOTOS: Click for all the pics from the Starlight Ball.