Jennifer Aniston looked gorgeous throughout the series. The only noticeable change was her hairstyle which kept changing over a period of 10 years.
Birthday: 11 February 1969
Born In: Los Angeles, California, United States
Sun Sign: Aquarius
Age: 55
Height: 5′5″
Birthday: 15 June 1964
Born In: Birmingham, Alabama, United States
Sun Sign: Gemini
Age: 60
Height: 5′5″
Courteney Cox sported short hair in the first season of 'Friends'. As the series went into its subsequent seasons, Courteney's hair kept growing. Also, by the end of the series, Courteney was no longer a slender woman that she was in the first season.
3. Matt LeBlanc
Birthday: 25 July 1967
Born In: Newton, Massachusetts, United States
Sun Sign: Leo
Age: 57
Height: 5′10″
Matt LeBlanc, though, has not evolved as a character, but his appearance has gradually changed with time. He is the same hilarious character as introduced in the first episode, but it seems like the age did catch up with his looks.