Born to a French father Andre Dantec and Indo mother of Javanese-Chinese-Italian descent, Anita Kirana, Mariana modeled on the catwalks of Paris, Jakarta, Singapore, Vietnam before she became one of Indonesia's model for Lux's soap brand.
She obtained an undergraduate degree in English Literature from the University of Paris (Sorbonne) and is working on master's degree at the University of New South Wales in business and commerce.
In 2005, she took a supporting role in the Indonesian film Janji Joni, or Joni's Promise, directed by Joko Anwar. She won Most Favorite Supporting Actress at the MTV Indonesia Movie Awards for the role in December 2005.
Among other appearance, she was featured in the made-for-Indonesian-market version of Josh Groban's music video, She's Out of My Life, appeared in the Indonesian version of Rivermaya's song Balisong (Filipino band), and appeared in the Indonesian TV Series Dunia Tanpa Koma (DTK), in a cameo role.
Due to her commitment to her studies, she resigned herself from representing Lux in 2007