10 photos of celebrities meeting royals — and we can't tell who's more starstruck

The INSIDER Summary:

• Celebrities and members of the royal family run in similar circles.
• Even famous people get starstruck sometimes.
• Here are 10 adorable photos of them meeting each other.

Celebrities and British royals rub shoulders from time to time, considering that members of the royal family are world-famous celebrities, themselves.

When they do meet, it turns out that even the biggest names get flustered around people they look up to.

While members of the royal family can't sign autographs for security reasons, they can (and do!) pose for pictures when they cross paths.

Here are 10 adorable photos of royals and red carpet stars fangirling over each other.

Cara Delevingne had a laugh with Prince Charles at a charity event.

Kanye West and P. Diddy joked around with the two young princes back in 2007.

Reese Witherspoon was thrilled to meet Kate Middleton at a reception in California.