Khloé Kardashian and Tristan Thompson’s baby boy Tatum is one-years-old.

On Friday (July 28), the reality star relished the happy moment with a touching message and various candid snaps she shared with her followers on Instagram.

In the caption, she wrote, “Happy birthday, my sweet son! I am a firm believer in that God gives you what you need and I needed you. God knew my heart needed you. I needed your sweet and precious Smile. I needed your angelic spirit. I needed a love only you could give me. I needed my son.”

She continued, “I am so proud to be your mommy. So proud of the love and laughter we have in our house. So proud of your beautiful, gentle, loving, infectious spirit. You light up every single room. There’s no denying that Everyone smiles when they look at you! Especially True 🥹 she is so proud to call you hers.”

The birthday boy is the younger sibling to Kardashian and Thompson’s daughter True, 5. In the post, she explained how her children have impacted her life since becoming a mom.

“Tatum, You have changed mine and True’s lives forever. We both needed you. I knew she would be a fantastic, loving older sister, but I don’t think I ever could’ve imagined the love and bond you guys already have.” She added, “You both remind me so much of uncle Bob and I. It’s fitting since I think you look soooo much like your uncle. (Which means I think you look like my dad too).”

Towards the end of her post, the mom of two took a spin on her version of the classic lullaby “You Are My Sunshine”. She wrote, “You are my SONshine / My only SONshine / You make me happy / Everyday / You'll never quite know dear / How much I love you / But I’ll do my best and show you everyday.”