[4] Němcová has appeared on international covers of Harper's Bazaar, Madame Figaro, Elle, Shape, Cosmopolitan, Marie Claire, Flare, Glamour, L'Officiel, and Sports Illustrated.

[4] Němcová has walked for designers including Lolita Lempicka, Gai Mattiolo, Matthew Williamson, Guglielmo Cappone, Marina Babini, Yumi Katsura and Michiko Koshino.

[4] Němcová gained attention outside the fashion industry after featuring on the cover of the 2003 Sports Illustrated Swimsuit Issue, from a shoot in Barbados by Walter Iooss.

[10] On 26 December 2004, Němcová was in Khao Lak, Thailand, with her main photographer and boyfriend, Simon Atlee, when the 2004 Indian Ocean earthquake and tsunami struck.

[11] Atlee drowned and Němcová suffered a broken pelvis and serious internal injuries, but she managed to hold on to a palm tree for eight hours until she was rescued by Thai civilians and airlifted to an inland hospital nearby.

Her autobiography, Love Always, Petra, was released in 2005 from which 100% of the profits were donated towards helping children affected both by the 2004 tsunami in Thailand and ongoing natural disasters worldwide.

As a result of programmes run by the Happy Hearts Fund, 176 schools have been rebuilt world-wide in 10 countries including Thailand, Indonesia, Haiti, Nepal, Peru, Mexico and The Philippines.

Her personal experience during the 2004 Boxing Day Tsunami gave her a deep understanding of the power of Mother Nature, allowing her to connect with those in need, bolstering the success of her work through the organisation.

[15] Němcová is co-founder and vice chair of All Hands And Hearts - Smart Response (AHAH), a non-profit organisation dedicated to providing fast and effective support to communities hit by natural disasters worldwide.