"I am still enjoying my Saturday night dancing with my crazy dog," she wrote.
Anna has dated the singer for 15 years Anna and her boyfriend of 15 years Enrique are notoriously private and rarely share photos on social media together.
The Russian beauty sang along – word perfect – to the Spanish tune as it played in the background.
She enthusiastically threw some shapes and laughed at the camera, captioning her video, "The dancing marathon continues" and "#dancewithme".
Anna Kournikova danced to her boyfriend Enrique Iglesias' new song An hour later Anna was still dancing to her boyfriend's catchy track as she posted another video. The sporty blonde also called on her pet dog to act as her dance partner.
Holding up his front paws and swaying with him, Anna bent down and kissed her dog on the lips.
Dressed in casual sportswear and posing aboard a boat, Anna, 34, showed off her toned abs and enviable figure.
They are adorable, and whenever we see them out and about, our hearts skip a beat.
Her beauty and celebrity status made her one of the best known tennis stars worldwide, despite her never winning a WTA singles title.
Anna Kournikova is currently dating Enrique Iglesias.
She has been in five celebrity relationships averaging approximately 4.1 years each.