Move over fitness models and hot bods on Instagram. The internet is currently obsessing over this family gene pool of a 60- year-old mother and her 40-year-old-daughter who have defied all signs of ageing.

我最親愛的寶貝二姐生日快樂～～～💋💋💋希望你永遠都那麼年輕美麗～平安健康～事事順心！沐沐寶貝和宛宛寶貝也都會乖乖聽你的話平安長大！😘😘😘和二姐夫永遠幸福美滿❤️❤️❤️ #我最愛的家人 #永遠40歲不再增加歲數了🤣🤣🤣 @hsufayfay @lurehsu

A post shared by 許維恩sharon (@sharon701111) on Jun 26, 2017 at 6:08pm PDT

The woman in the middle is actually the mom! Not kidding. 

Lure Hsu is 40 and her sister, Sharon is 36. Yep, you read that right!

親愛的菲菲生日快樂🎁🎂要一直健康，平安，幸福❤️love u❤️ #lurehsu #許路兒 #許菲菲 #許維恩

A post shared by ⭐️許路兒⭐️ (@lurehsu) on Jun 26, 2017 at 8:40pm PDT

The internet is freaking out over their respective ages and it's some kind of magic.

👙☀️🌺有陽光😊#許路兒 #lurehsu #roxy #quiksilver #2020eyehaus #lindafarrow

A post shared by ⭐️許路兒⭐️ (@lurehsu) on Jun 20, 2017 at 10:24pm PDT

珍惜這幾天的假期～～～回去就要好好衝刺了💪🏼💪🏼💪🏼

A post shared by 許維恩sharon (@sharon701111) on Jun 21, 2017 at 7:49am PDT

What is the secret and how are they doing it, we don't know. They are gorgeous, and they are hot and they are freaking 41 and 63 years old. That's all we need to know.