Jennifer Aniston Wishes Friends Costar Lisa Kudrow a Happy 59th Birthday: 'I Love You!'

The Emmy winner celebrated her 59th birthday on Saturday

the help of her friend and co-star Jennifer Aniston.

Jennifer Aniston dedicated Kudrow to good memories of the two.

Aniston, 53, captioned "Happy Birthday to her @lisakudrow"

the 29th Annual People's Choice Awards in 2003.

Kudrow said his 24-year-old son Julian Stern thought Aniston was his mother