As if there needs to be another reason to celebrate the beauty of friendship, it's National Best Friends Day! In honor of the delightful occasion, we're shouting out the celebs who've kept their friendships on lock over the years. These are besties who've stuck it out no matter what, through good times and rough times.

Rowan Blanchard and Sabrina Carpenter met on the set of their Disney Channel show Girl Meets World and now have a bond that cannot be matched. (They celebrated their four-year friendiversary earlier this January.) Even though GMW is sadly off the air, their friendship lives on.

Plus, who can forget Niall Horan and Ashton Irwin's epic bond? The One Direction and 5 Seconds of Summer guys truly bonded on tour together and are still homies for life. Ashton has said that he still keeps in touch with Nialler on the reg.

The cuteness!

From Taylor Swift and Selena Gomez to Ashley Benson and Shay Mitchell, click through the gallery to see more celebrity besties we seriously love, then vote for your fave on the last slide.

This story was originally published on January 26, 2015. It has since been updated.

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