When things are difficult, everyone has that one person they can turn to. And, even though many people want to be their BFF, many celebs already have one. It’s sometimes a fellow celebrity who knows what it’s like to be in the spotlight. Here are the most memorable celebrity friendships, from Taylor Swift and Selena Gomez’s long-lasting relationship to Snoop Dogg and Martha Stewart’s unusual combination.

Liv Tyler and Kate Hudson

Hudson and Tyler attended Crossroads School For Arts and Sciences in Santa Monica, California, in the 1990s. Hudson and Tyler were drawn together by their shared celebrity parents: Hudson’s mother is Goldie Hawn, and Tyler’s father is Aerosmith’s Steven Tyler. Hudson refers to Steven as “Papa Tyler” since the two families are so close.

Cara Delevingne and Rihanna

“‘Madam, you are so great, I adore you, you look so gorgeous out there performing,’ I said as I approached her. You’ve put the rest of us to disgrace.’ I then smacked her across the face.” — Grazia Daily, Cara Delevingne

Snoop Dogg and Martha Stewart

“I adore Martha—absolutely adore her. She is the big sister I lacked as a child. Being able to chastise me, teach me, show me how to grow, and give me something to aim towards.” Snoop Dogg, Martha Stewart “I enjoy watching him cook because of his relaxed energy—I admire his outspokenness, sense of timing, and outspokenness.” —Maria Stewart

Nicole Kidman and Naomi Watts

“Over a lengthy period, we’ve been through a lot together. That shared history binds you together. We have a lot of admiration and regard for one other.” — People, Naomi Watts “Naomi Watts and I are really good friends who have stayed such over many difficulties. That is something I feel is truly unique among actresses, and I am extremely proud of it.” — for the Telegraph, Nicole Kidman

Charlize Theron and Kristen Stewart

“Within the first five minutes of meeting her, it occurred.” We were on our way to Comic-Con in San Diego, and I simply fell in love with her.”