Khloé: Rob is my rock

Khloé Kardashian would be “lost” without her younger brother Rob.

The lesser-known Kardashian sibling turned 27 on March 17 and Khloé took to social media to share the family celebration with fans.

“Happy birthday @robkardashian I would be lost without you!! Thank you for being the best brother anyone could ask for,” she captioned a collage of the pair together on Instagram.

“This year I want to give you the ability to see yourself through my eyes! I want you to own how incredible you are and shine the way you are meant to shine. I love you!!!!” she wrote.

Khloé also shared that the family was enjoying some time together to celebrate.

“Birthday dinner and game night!!! Wooohoo #HappyBirthdayRob,” she tweeted.

Kim and Kourtney also chimed in, adding their own messages with photos of themselves with their brother.

“Happy Birthday to my baby bro robkardashian I love you soooo much!!!!” Kim wrote.

“Happy birthday @RobKardashian Love you!!” Kourtney added.

The siblings’ mother also chimed in. Kris Jenner wrote a loving message to her only son on Instagram, sharing her pride in the man he's become.

“Happy Birthday @robkardashian !!! You are the most amazing young man and the most wonderful son a mom could ever ask for. Continue to Dream Big and Work Hard and Love Completely...i am so proud of you, I love and adore you xoxo Mommy,” she wrote.