Helena Christensen who shared a series of selfies with her sister, Anita, leaving fans desperate to know their beauty secrets.
The Danish model, 52, posted several snapshots to wish her sibling a happy birthday and it wasn't just Helena marveling at her sister's youthful appearance, her followers were super impressed too.
MORE: Helena Christensen leaves fans stunned all-natural swimsuit video Helena posted the photos on Instagram on Monday and captioned them: "This is my sister.
Today is her birthday. She's 23. No, wait she's not 23. But she looks it. WATCH: Helena Christensen causes a stir by plunging herself into icy cold water"Damn @anitasonne73 how do you do it?
Read more on hellomagazine.com