TV talk show host Ellen DeGeneres is reportedly set to follow in the footsteps of Rihanna and Drew Barrymore by becoming the latest face of cosmetics company CoverGirl.The 50-year-old star is rumoured to have signed a six-figure deal with the make-up firm to promote the brand.A source tells New York Post gossip column PageSix, "(DeGeneres is) shooting the campaign this week. She must have gotten at least $1 million for it."Supermodel Christie Brinkley was the original face of CoverGirl cosmetics, promoting the range for over 20 years. The 54-year-old was recently rehired to endorse the company's new line of products, which are aimed at older women.