Victoria's Secret model Karolina Kurkova has a secret of her own – a missing belly button!

The Czech beauty – who is one of the lingerie brand's most popular models –  proudly displayed her smooth tummy during a recent swimwear photoshoot on Miami beach.

Karolina flaunted her unique navel as she posed with other Victoria's Secret beauties in matching white bikinis.

Karolina’s agent explains, “Her belly button is very smooth. But I can assure you she’s not an alien!”