The close pals danced barefoot together on top of Billy Joel's piano during his Chicago concert on Thursday night.
Jen and Amy are quickly becoming Hollywood's most epic dynamic duo.
The little girl looks just like her father.
The 66-year-old singer and his new wife have been together since 2009
Congratulations are in order!
Congratulations, Billy and Alexis! Just don't look at Christie Brinkley's Intagram...
Billy Joel is going to be a dad again at the age of 65.
Not all celebrity couples who split up go on to become enemies!
Billy Joel and Christie Brinkley may be divorced, but she'll always be his "Uptown Girl."
Alexa Ray Joel reportedly collapsed during a sold-out performance over the weekend.
Click through our Birthday Babes gallery to find out when your favorite celebs celebrate their big day this year!
The boxing champ received an honorary doctorate in humane letters from Central State University in Ohio.
