Former Hollywood party girl Nicole Richie has turned 40-years-old.
The Simple Life star received a warm tribute on social media from her younger sister Sofia Richie, 23, on Tuesday.
'Happy birthday big sis Nicole,' was all the ex of Scott Disick wrote in her caption for her nearly 7m Instagram followers.
A new era: Former Hollywood party girl Nicole Richie has turned 40-years-old
For sissy: The Simple Life star received a warm tribute on social media from her younger sister Sofia Richie, 23, on Tuesday
The family: Here Nicole is seen with brother Miles, farl left, sister Sofia, dad Lionel and husband Joe, far right
Cute: 'Happy birthday big sis Nicole,' was all the ex of Scott Disick wrote in her caption for her nearly 7m Instagram followers
The budding model also shared several throwback images with her fashion designer sister.
One showed them with their father, singer Lionel Richie. Another revealed Nicole in her swimsuit as she swam in a lake.
Lionel also shared his own Instagram post with flashback photos.
'It's showtime !! ⭐️ @nicolerichie You have been rainbows and butterflies your whole life … but you will always be my little girl, no matter how many birthdays we celebrate!' the Say You crooner wrote in his caption for his 1.2M followers.
And Nicole's husband Joel Madden said, 'Happy Birthday Nicole❤️ You've made love feel timeless I've forgotten how old we are ❤️.'
Nicole is married to Joel of the band Good Charlotte and together they have two children: Sparrow and Harlow.
Back in time: The budding model also shared several throwback images with her fashion designer sister
Double date: from left, Nicole, Joel, Sofia's beau Elliot Grainge, head of the independent record label 10K Projects, and Sofia
The beauty has segued from reality TV star on The Simple Life with Paris Hilton to fashion designer with the House Of Harlow.
Nicole is the adopted child of her father Lionel and his first wife, Brenda Harvey-Richie.
Sofia is the youngest child of Lionel Richie and Diane Alexander. The two were married from 1995 to 2004.
Sofia is also active in the entertainment industry.
Fun on a yacht: Here Nicole and Sofia are side by side on a day out at sea
The good life: Being a Richie means many vacations and stylish clothing
They have a bond: Nicole in beige and white with gold heels and Sofia in black
Fun in Spandex: from left, Nicole in pink, a pal in a daisy pattern and Sofia in tie dye
A last look: Sofia and Nicole were seen from the back with their arms around each other
Sofia has been doing well as a model in high profile campaigns for companies like Tommy Hilfiger, Michael Kors and Adidas.
She also appeared in a few episodes of her sister's scripted comedy-reality show Candidly
