December 18 is National Twin Day! See our list of 7 famous celebrity twins you may or may not know about.

Tia Mowry-Hardrict & Tamara Mowry-Housley

With over 30 years in the entertainment business, Tia and Tamera need no introduction!

For many of us, the 43-year-old sisters feel like family because we grew up watching them.

Nikki Bella & Brie Bella

The Bella Twins rose to fame as a professional wrestling tag team on the WWE.

The 36-year-old sisters are now mothers, entrepreneurs, authors, and podcasters.

Benji Madden & Joel Madden

The 42-year-old Madden brothers are the founders of the rock band, Good Charlotte.

Joel is the lead vocalist and Benji plays the lead guitar.

Luna Lauren Velez & Lorraine Velez

I was completely blown away when I found out Luna Lauren was a twin…an identical twin at that.

Like her sister, Lorraine is also an actress and she sings too!

Oliver Phelps & James Phelps

The Phelps twins played the roles of the Weasley twins in all eight Harry Potter films.

The 35-year-old brothers are now podcast hosts of their own show, “Normal Not Normal.”

Khadijah Haqq & Malika Haqq 

The Haqq twins are actresses with over 25 credits between the two of them.

The 38-year-old sisters are also mothers and they have their own YouTube series, “Side By Side.”

Kenny Lucas & Keith Lucas

Kenny and Keith, known as The Lucas Brothers, are comedians, actors, and filmmakers.

The 36-year-old sibling co-wrote the Oscar-nominated film, Judas and the Black Messiah.

Sending love to all of our ICC twins out there! ????????