Short, funny and thoughtful, these messages will show your sister or sister-in-law how much she means to you. Read our favourites here.

Khloé Kardashian posted a carousel of photos with her big sister from vacations, stylish events, and family gatherings. She wrote a long, gushing caption in honor of Kim, calling her “one of the most spectacular and extraordinary humans I know.”

Khloe Kardashian took to Instagram to post a series of photos capturing special moments with her sister Kim over the years, from luxurious vacations to family gatherings. Alongside the images, Khloe penned a lengthy and emotional caption, praising Kim as "one of the most spectacular and extraordinary humans" she knows.