9 pairs of famous celebrities you had no idea were family

Now, it makes sense that Mary Kate and Ashley Olsen are related, but Nicole Richie and Cameron Diaz on the other hand?

Not so much. Yes, we're all aware of powerhouse siblings of the world; there's the Franco brothers, the incredibly good looking Hemsworths, and of course, Ben Affleck and Casey Affleck. However, there are some pairings that just don't make sense.

Here are nine celebrities that you had no idea were related... And they're bound to have you scratching your head in confusion.

1. Nicole Richie and Cameron Diaz

Nicole Richie and Cameron Diaz are sisters-in-law, after Diaz married Benji Madden in 2015.

2. Tracee Ellis Ross and Diana Ross

The actress's mother is the legendary singer, Diana Ross.

3. Ashlee Simpson and Diana Ross

If you weren't aware, Ross is Ashlee Simpson's mother-in-law. Ashlee married the singer's son, Evan Ross, back in 2014

4. Dakota Johnson and Antonio Banderas

The Fifty Shades of Grey actress is Antonio Banderas' former stepdaughter. Banderas separated from Dakota's mother, Melanie Griffith in 2015.

5. Rooney Mara and Kate Mara

Rooney is Kate's younger sister, and both are actresses.

6. Lily Allen and Alfie Allen

The Game of Thrones star is the brother of pop-singer, Lily Allen

7. Brandy and Snoop Dogg

Now, this one is surprising. Brandy and Snoop Dogg are first cousins.

8. Sofia Coppola and Jason Schwartzman

Schwartzman and Coppola are first cousins.

9. Emily Blunt and Stanley Tucci

The Devil Wears Prada costars are sister-and-brother-in-law. Tucci is married to Blunt's sister, Felicity.

I don't know about you, but I had no idea about half of these Hollywood ties! I mean, who could have guessed about Diana Ross and Ashlee Simpson...