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Justin Bieber, Jazmyn Bieber

George Pimentel/WireImage

Perhaps a little #familytime is just what Justin Bieber needs.

The pop star took to Twitter today to wish his litter sister, Jazmyn, a happy 5th birthday, broadcasting his sibling's special day to his nearly 40 million followers.

"HAPPY BIRTHDAY @JazmynBieber!!! I love you! #HappyBirthdayJazzy," the 19-year-old posted this morning on his blogging page.

Justin Bieber, Sister, Instagram

Instagram

The "Beauty and a Beat" singer also shared an adorable photo of his little sister tuckered out in a pink tutu just a few hours later, captioning the Instagram image, "The birthday girl is tired."

But that wasn't the end of the Biebs well wishes for his sibling, he posted another tweet shortly after, sharing his love for his family.

"#familytime #HappyBirthdayJAZZY," he wrote.

Last night, the singer attended BFF Jaden Smith's After Earth premiere in NYC, where he showed support for his pal both in person and on social media.

"Everyone go see #AfterEarth this weekend. @officialjaden we got u. #supportyourfriends," he tweeted this morning before the birthday festivities began.

Way to be a good bro and a great brother, Justin!