Sure, in many cases they have the same last name, but you may be shocked to find out which famous faces actually share genes.

Pablo Schreiber and Liev Schreiber

Credit: Getty Images / Alberto E. Rodriguez and Getty Images / Theo Wargo

Pablo Schreiber, known for his role as Pornstache in "Orange Is the New Black," and Liev Schreiber, who stars on Showtime's "Ray Donovan," are half-brothers.

Alfie Allen and Lily Allen

Credit: Composite photo; Getty Images / Jamie McCarthy, left, and Getty Images / Pascal Le Segretain

Alfie Allen, aka Theon Greyjoy of the Iron Islands from the HBO series "Game of Thrones," is the younger brother of British singer Lily Allen.

Jussie Smollett and Jurnee Smollett-Bell

Credit: Getty Images for Essence / Leon Bennett

"Empire" actor-singer Jussie Smollett, is the older brother of "Underground" and "Roll Bounce" actress Jurnee Smollett-Bell.

Credit: Getty Images / Alberto E. Rodriguez, Getty Images / Rich Fury and Getty Images / Imeh Akpanudosen

"I'm Coming Out" singer Diana Ross, is the mother of "Girlfriends" and "Blacki-sh" actress Tracee Ellis Ross, and "The Hunger Games" actor Evan Ross.

Credit: Getty Images / Frazer Harrison

A-list actress Julia Roberts is aunt to "Unfabulous" and "Scream Queens" actress Emma Roberts. Emma is the daughter of Julia's actor-brother Eric Roberts, who was nominated for a Oscar for his role in the film "Runaway Train."

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"Gossip Girl" actress Blake Lively is the sister-in-law of Bart Johnson from "High School Musical." Johnson is married to Blake's older sister, Robyn.

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"Batman" actor Ben Affleck is reportedly the 11th cousin of former President Barack Obama.

Credit: Getty Images

Actor Brad Pitt, is reportedly the ninth cousin of former President Barack Obama through a Virginia ancestor who died in 1769.

Credit: Getty Images / Pascal Le Segretain

Eco-friendly British fashion designer Stella McCartney, is the daughter of The Beatles' singer Paul McCartney.

Credit: Getty Images / Michael Loccisano and Getty Images / Frazer Harrison

"Ghostbusters" actress Melissa McCarthy is the cousin of "Dirty Love" actress and former Playboy model Jenny McCarthy. Jenny revealed their relationship when she tweeted, "Congrats to my cousin melissa mccarthy on her Emmy win!!" after she won an Emmy for her role in the CBS series"Mike and Molly."

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In a 2012 interview with "Extra," Halle Berry revealed she is related in "some twisted way" to controversial Republican and former governor of Alaska Sarah Palin.

Credit: Getty Images / Frazer Harrison, Getty Images / Frederick M. Brown and Getty Images / Samir Hussein

"Freaky Friday" actress Jamie Lee Curtis is the daughter of late "Some Like It Hot" actor Tony Curtis and late "Psycho" star Janet Leigh. Curtis and Leigh gained popularity in the 50s and 60s.

Credit: Getty Images / John Phillips and Getty Images / Neilson Barnard

In 2004, a DNA test revealed British model and actress Daisy Lowe, then 15, is the daughter of Bush lead singer Gavin Rossdale, who was married to Gwen Stefani until 2016. Rossdale and Lowe's mother, Pearl Lowe, reportedly had a five-year relationship in the late 1980s.

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