Brad Pitt and Angelina Jolie Take Their Twins Out For Birthday Breakfast in West Hollywood

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Brad Pitt and Angelina Jolie's twins, Vivienne and Knox, turned 8 on Tuesday, and the superstar parents celebrated by treating their adorable tots to a tasty meal.

Pitt and Jolie proved the old adage "celebs are just like us" when they took their twins to The Griddle Café in West Hollywood for their special day.

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Pitt, 52, rocked a white t-shirt and a beige, short-brimmed trilby while Jolie, 41, donned a black top under a light cardigan, and wore her hair down. Both stars wore dark shades.

Despite efforts to remain inconspicuous, it wasn't long before their fellow patrons took notice of the Oscar-winning couple.

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While many celebs have earned reputations for diva-like behavior, these proud parents have always been very down to earth when it comes to raising their family. An eyewitness tells ET that they just "looked like a family eating breakfast… They were just eating and having a good time."

Pitt and Jolie, who welcomed Knox and Vivienne on July 12, 2008, share four other kids as well, including their 14-year-old son Maddox, 12-year-old son Pax, 11-year-old daughter Zahara and 10-year-old daughter Shiloh.

For more of the celebrity parents' super adorable moments, check out the video below.