United Kingdom, Jan. 30 -- Paris Hilton bonded with Britney Spears over the "trauma'" they both experienced back in the 2000s - declaring it has made them both "so strong".

The hotel heiress, 44, has been friends with the superstar singer for many years and she's revealed they recently had a catch-up during a trip to Mexico for Britney's birthday and they spoke about the harsh realities of living in the spotlight 20 years ago.

During an appearance on the I've Never Said This Before with Tommy DiDario podcast, the host asked Paris if she has spoken to Britney about their "shared trauma" and she replied: "Yeah. I was just with Britney a few weeks ago for her birthday in Mexico and we were just talking about how cruel and mean-spirited peo...