Gymnast Nastia Liukin posted a sweet birthday tribute to her mom on Wednesday.

Her mother is former Soviet rhythmic gymnast Anna Kotchneva.

Nastia Liukin is a five-time Olympic gold medalist herself.

She shared several images of her mother in an Instagram carousel.

Many fans were shocked to see how much the two looked alike.

“I can’t tell if that last photo is you or your mom!” one fan commented.

In the caption, Nastia called her mother her “forever muse.”

“Your love, kindness, courage, strength, beauty, dedication, calmness, and much more, are all just about impossible to top,” she wrote.

“Thank you for always believing in me,” she added. “I love you, Mom.”