In pictures posted on social media, she can be seen posing in front of iconic city sights including the Grand Ducal Palace.
The Serbian tennis player, now 33, made a name for herself after winning the French Open in 2008, leading to her classification as the top female tennis player in the world.
Her career started in 2004 at the Zurich Open, where she put up a tough fight against Venus Williams, before eventually being bested in the second of two tiebreak sets.
The BGP BNL Paribas Luxembourg Open is taking place from 11 to 19 September at the CK Sportcenter.
