Agnieszka Hyży (née Popielewicz; born March 19, 1985) is a Polish journalist, TV presenter and former model.

[6] In 2004 she started dating Marcin Mroczek, whom she met on the set of the game show Ciao Darwin.

[4] Popielewicz married Mikołaj Wit on August 6, 2011 in the town of Biała Rawska.

[14] In early 2008, Popielewicz and Zygmunt Chajzer started hosting the show Gwiezdny cyrk.

In April of that year, she starred in an episode of the third season of the program Jak oni śpiewają, where she sang a duet with Dariusz Kordek performing the song "Felicita".

At the end of the year, she co-hosted the international beauty contest Miss Intercontinental 2008 along with Zygmunt Chajzer and Jakub Klawiter.

[16] In the spring of 2010 she replaced Ewelina Kopic as the new talk show hostess for Grunt on the channel Polsat Café.

In March of the same year she started taping behind-the-scenes episodes of Taniec z gwiazdami (the Polish version of Dancing with the Stars).