Knox and Vivienne Jolie-Pitt were spotted at their home in Budapest with their nannies.

• TAGS

• Jolie-Pitt Twins
• Knox Jolie-Pitt
• Vivienne Jolie-Pitt

Angelina Jolie made a surprise trip to Bosnia on Saturday to discuss the fate of refugees.

• TAGS

• Angelina Jolie
• Brad Pitt
• Jolie-Pitt Twins

Angelina Jolie and Brad Pitt usually keep their twins well hidden.

PHOTOS: Angelina And Knox Play Peek-A-Boo!

But as RadarOnline.com discovered in Venice, Italy, that cover can be blown with a game of peek-a-boo!

PHOTOS: Johnny And Angelina Film The Tourist

On the private balcony of the 15th century penthouse that the Brangelina clan are renting while mom films The Tourist, 20-month-old Knox appeared to relish the view from above.

PHOTOS: Angelina Jolie's Daughter Cries For Mommy

There was no sign of twin Vivienne.

But as they grow older, the blond and blue-eyed twins -- the youngest kids among the Jolie-Pitt six -- continue to look more and more like their big sister Shiloh, who also showed her face during the fun games!

• TAGS

• and Knox
• Angelina Jolie
• Brad Pitt
• Hollywood
• Jolie-Pitt
• Jolie-Pitt Twins
• Knox
• Sexiest Bodies
• Shiloh
• Vivienne
• Vivienne Jolie-Pitt

Angelina Jolie and her twins, Vivienne and Knox, peek out of the balcony of their hotel in Venice.

• TAGS

• Sexiest Bodies Hollywood
• Angelina Jolie
• Brad Pitt
• Jolie-Pitt Twins
• Knox Jolie-Pitt
• Shiloh

Brangelina and the kids spend more time in Venice.

• TAGS

• Angelina Jolie
• Brad Pitt
• Italy
• Jolie-Pitt Twins
• Knox Jolie-Pitt
• Venice
• Vivienne Jolie-Pitt

Brad, Angelina, And The Kids Leave Italy

• TAGS

• Angelina Jolie
• Brad Pitt
• Jolie-Pitt Twins
• Kids
• Maddox
• Pax
• Shiloh

Brad Pitt and Knox Jolie-Pitt get caught in the rain.

• TAGS

• baby
• Brad Pitt
• Jolie-Pitt Twins
• Knox Jolie-Pitt
• Rain
• son
• Umbrella
• Venice
• water taxi