Hailey Baldwin Celebrates Big Sis Alaia's Birthday with Throwback Pic!

Hailey Baldwin is wishing her big sister a happy birthday with a super cute throwback pic!

The 20-year-old model took to Instagram on Tuesday (January 24) to share a baby picture of herself getting carried around by her sister Alaia to celebrate her 24th birthday.

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“The best big sis in the world is 24 today. love you so much @alaiabbbaldwin happy birthday,” Hailey captioned the below pic.

Later that night, Hailey was spotted rocking a super cute leather skirt and sunglasses as she made her way out of The Roxy nightclub in West Hollywood.