Christensen rose to prominence in the 1990s, becoming one of the most popular models of her time.
In 1990, she starred in the music video for Chris Isaak's song "Wicked Game".
The video was later featured on MTV's "Sexiest Video of All-Time", voted #4 on VH1's "50 Sexiest Video Moments", and voted #13 on VH1's "100 Greatest Videos".
She became a spokesmodel for Revlon cosmetics in 1992.
She appeared on magazine covers including Vogue, Elle, Harper’s Bazaar, and W, and in fashion campaigns including Revlon, Chanel, Versace, Lanvin, Prada, Sonia Rykiel, Hermes, Valentino and Karl Lagerfeld.
One noted campaign featured her in a 20 by 40 feet (6 by 12 m) billboard in Times Square, naked, "except for a strategically placed banana leaf."
She was in the Victoria's Secret catalog and in their television commercials as one of the original "Angels", along with Tyra Banks, Karen Mulder, Daniela Pestova, and Stephanie Seymour.

In 1996, Frank DeCaro of the New York Times cited Christensen, along with Linda Evangelista, Christy Turlington, Cindy Crawford, Naomi Campbell, Elle Macpherson and Claudia Schiffer, as "The Magnificent Seven".
DeCaro reflected, "Known by their first names to legions of fans, they are the supermodel legends of the modern catwalk, the girl next door pretty underneath all the paint".

Christensen has continued to model.
She graced the covers of Vogue Italia (2016), Portuguese Vogue (2016), British Tatler (2018), French Elle (2018).
In September 2017, Christensen, along with Schiffer, Campbell, Crawford, and Carla Bruni, closed the Versace spring/summer 2018 fashion show, which was an homage to the late Gianni Versace and supermodel history.
She walked the runway for Dolce & Gabanna and appeared in their spring/summer 2019 advertisement campaign with Carla Bruni, Eva Herzigova and Marpessa Hennink.
Christensen is signed to ZZO Management in Paris, D Management in Milan, Unsigned Group in London and 1/One Management in New York City.
Christensen rose to prominence in the 1990s, becoming one of the most popular models of her time. In 1990, she starred in the music video for Chris Isaak's song "Wicked Game". The video was later featured on MTV's "Sexiest Video of All-Time", voted #4 on VH1's "50 Sexiest Video Moments", and voted #13 on VH1's "100 Greatest Videos". She became a spokesmodel for Revlon cosmetics in 1992. She appeared on magazine covers including Vogue, Elle, Harper’s Bazaar, and W, and in fashion campaigns including Revlon, Chanel, Versace, Lanvin, Prada, Sonia Rykiel, Hermes, Valentino and Karl Lagerfeld. One noted campaign featured her in a 20 by 40 feet (6 by 12 m) billboard in Times Square, naked, "except for a strategically placed banana leaf." She was in the Victoria's Secret catalog and in their television commercials as one of the original "Angels", along with Tyra Banks, Karen Mulder, Daniela Pestova, and Stephanie Seymour.
In 1996, Frank DeCaro of the New York Times cited Christensen, along with Linda Evangelista, Christy Turlington, Cindy Crawford, Naomi Campbell, Elle Macpherson and Claudia Schiffer, as "The Magnificent Seven". DeCaro reflected, "Known by their first names to legions of fans, they are the supermodel legends of the modern catwalk, the girl next door pretty underneath all the paint".
Christensen has continued to model. She graced the covers of Vogue Italia (2016), Portuguese Vogue (2016), British Tatler (2018), French Elle (2018). In September 2017, Christensen, along with Schiffer, Campbell, Crawford, and Carla Bruni, closed the Versace spring/summer 2018 fashion show, which was an homage to the late Gianni Versace and supermodel history. She walked the runway for Dolce & Gabanna and appeared in their spring/summer 2019 advertisement campaign with Carla Bruni, Eva Herzigova and Marpessa Hennink. Christensen is signed to ZZO Management in Paris, D Management in Milan, Unsigned Group in London and 1/One Management in New York City.
Helena Christensen