Justin Bieber 's step-sister, Allie Bieber , is always supporting her sister in law.

Allie, 18, took to Instagram on Thursday, August 7, to show off her Rhode products. In the reel, she waved her Rhode Peptide Lip Treatment to the camera before unscrewing it and applying it to her pout. Allie gave the camera a kiss while showing off her hydrated lips.

Allie teamed her soft glam with a white tank top featuring a scoop neck and a fitted, cropped fit. She styled the basic with striped boxer shorts and white cowgirl boots.

Allie tagged Hailey Bieber in her story, leading the Rhode founder to repost it.

Throughout the years, Hailey, 28, has shared lots of sweet moments with Justin's sisters. (Justin is the son of Jeremy Bieber , and Pattie Mallette . He has three other half sib

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