'Umbrella' star Rihanna took to Instagram on Tuesday (15 April) to wish her little brother a happy birthday and tell him how proud she is of his achievements.
Rihanna, 26, uploaded a cute childhood photo of her brother, saying he will always be her "lil monster" no matter his age.
"I can't help it," she wrote. "I still see you exactly like this! I always believed you were my baby! My lil boy. You've always trusted me most, enough to braid that hair, enough to cut it. You ate whatever I made you. You would fall asleep right in my arms."
Rihanna went on to say: "I will never forget that summer I stayed home from camp so I could take care of you so mum could work! I'm so proud of the man you've become."
The superstar added: "You're such a smart, humble, kind, charming, sarcastic guy! And I love you so much! Keep making ya big sis proud and listen to mommy, she be knowing!"
Of course, Rihanna's devoted fans also wished Rajad a very happy birthday in droves, prompting him to tweet: "Thank you to everyone for the birthday wishes."
Rihanna and Rajad are known to be close. Last year, RiRi shared a picture of them on a shopping trip alongside the caption: "Spent the day with my favourite guy!!! #bestdayever."
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Watch Rihanna's video for 'Umbrella' below: