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Jessica Biel presented the 81st Academy Awards’ Scientific And Technical Awards ceremony on February 7, 2009 in Beverly Hills, California. Biel looked stunning in a gown by Oscar de la Renta. She joins the impressive likes of Jessica Alba, Maggie Gyllenhaal, Rachel McAdams, Scarlett Johansson, Jennifer Garner, Kate Hudson, Charlize Theron, Renée Zellweger and Salma Hayek who have all hosted the awards. To see what they wore, click here.