The model lost her photographer partner Simon Atlee when the huge tidal wave hit Thailand, and has focused on helping fellow survivors of natural disasters ever since the tragedy.
On Monday (10Dec12) she was one of the stars who attended a special Los Angeles premiere of The Impossible, which tells the story of real-life survivor Maria Belon struggling to find her family in the aftermath of the horror.
Following the screening, Nemcova revealed she was left overwhelmed during movie, because it captured the fear and power of that day perfectly.
She tells Entertainment Tonight, ""The movie's done in such a powerful way and in a very accurate way. Everything from the hotel, to the wave, to the devastation, as well as the emotional linkages between the family members, as well as the unconditional love and compassion which has been created between strangers because of the devastation - all is incredibly accurate.
""It definitely had a huge impact on me... The first half (of the movie) is 90 per cent of what I've been through personally. I never thought that this 2004 Asian Tsunami could be captured in such a powerful and honest way. They did an incredible job.""
The Impossible stars Naomi Watts and Ewan McGregor.