She is the face of the Clean Fresh Skin Milk Nourishing Foundation by Covergirl. The 23-year-old looked ladylike and lovely in a blush pink dress, complete with wide sleeves and a netted lace back. Stepping out: On Thursday, Lili Reinhart, 23, attended the Covergirl launch party for the Clean Fresh Skin Milk Nourishing Foundation in Los Angeles The Riverdale actress …