Sofia Richie is the younger sister who knows what she is doing in the modeling world these days. She is close friends with Kendall & Kylie Jenner, she has an Instagram following of 6.5 million people, and her high-profile relationship with Scott Disick made headlines several times over the past few years.

RELATED: Sofia Richie Seen With Mysterious Man Weeks After Scott Disick Split

Nicole Richie is the older sister who has mastered family life, once used to be a reality TV starlet, and reminds her fans on social media that it is okay to relax and unwind every once in a while. These two sisters are amazing for so many reasons but even their most hardcore fans don't know every single little detail about them.

10 Sofia Originally Wanted To Be A Musician

Sofia Richie might be a model today but way back when, she was interested in being a musician, just like her father. She told Entertainment Tonight, "When I was 13, I was saying that I wanted to be signed to a label, I was begging my dad to get me signed with somebody." She knows exactly what she is doing as a model so we are sure she could pull off a music career as well.

9 Lionel Richie Is Not Nicole's Biological Father

Although Sofia Richie and Nicole Richie look a lot alike, they actually do not have the same father. Lionel Richie, we know, is Sofia‘s dad but he is not Nicole‘s biological father. Lionel Richie adopted Nicole when she was a young girl and raised her as his own daughter. Even without a bloodline connection, she is still his daughter because he was there for her like a father should be.

8 Sofia Is Active On Tumblr

According to Yahoo Entertainment, Sofia Richie said, "I never really thought I would make a blog myself, then I got super interested in pictures and runways. I started following a bunch of model blogs and runway blogs and then I just started following designers." It is no surprise at all that she thrives in the fashion and modeling world these days.

7 Nicole Wanted To Be A Figure Skater

When Nicole was younger, she wanted to be a figure skater. Obviously, she went in a different direction in life. She did some reality TV show work with one of her close friends, Paris Hilton, and has obviously gotten into the modeling game herself, just like her younger sister Sofia. If the cards were stacked differently for Nicole, a career as a figure skater might have definitely been a possibility!

6 Sofia Dated Justin Bieber Before Scott Disick

Everyone knows about Sofia Richie’s long-term relationship with Scott Disick. They got together when she was about 19 years old and remained together until after her 22nd birthday.

RELATED: 10 Things Sofia Richie Has Been Up To Since Her Breakup With Scott Disick

But did everyone forget about the fact that she used to date Justin Bieber too? When she was around 17 years old, she was in a relationship with Justin Bieber and even though it was short-lived, it was still pretty adorable to see.

5 Nicole & Paris Hilton Are Still Good Friends

Despite the fact that nasty rumors are constantly spread throughout the media about beef between Nicole Richie in Paris Hilton, they are in fact still good friends with each other in 2020. In the early 2000s, they starred on a reality TV show together that ended up being a major success. Even though they are no longer starring on reality TV shows together, that doesn’t mean that they aren’t still awesome friends! They have nothing but good things to say about each other.

4 Sofia Has A Bulldog Named Cairo

Sofia is a dog lover! She has a bulldog named Cairo. Her love for her dog is very clear and obvious since she is constantly photographed with her dog paparazzi. She also posts a lot of pictures of herself with her dog as well. She is similar to Kylie Jenner in the fact that she absolutely loves her pet! Her dog is very adorable and it wouldn’t be difficult for anyone to love Cairo!

3 Nicole Has Been Married To Joel Madden Since 2010

Nicole Richie has been married to Joel Madden since 2010. He was in a band called Good Charlotte in The early 2000s. The band is known for the song “Lifestyles of the Rich and Famous” the punk pop-punk song. They share two precious kids together! It seems like married life and motherhood suit Nicole well. Nicole and Joel started dating in 2006 so they knew early on that it was meant to be.

2 Sofia Was Inspired By Game Of Thrones To Go Blonde

It is very common to be a Game of Thrones fan. Before the season finale, just about everyone was tuning in every episode watching the series of events unfold. Sofia Richie was so inspired by Darnaryus Targaryen that she decided to bleach her hair blonde herself.

RELATED: Game Of Thrones And Every Other Show We Wish Had A Better Ending

She went for the blonde look of the mother of dragons because she knew that it would make her feel beautiful and powerful.

1 Nicole Used To Be Engaged To DJ AM

Before her relationship with Joel Madden, Nicole Richie was in a relationship with DJ AM. In fact, they were engaged to be married. They called things off because it just wasn't working out even though many people in the public thought they were really cute together. She is obviously better off with Joel Madden!

NEXT: Everything We Know About Nicole Richie's Relationship With Her Father, Lionel Richie