Jessica Alba served a serious dose of '90s nostalgia on Friday night when she shared a photo of herself and BFF Kelly Sawyer dressed as the characters from Romy and Michele's High School Reunion. The pair wore Romy and Michele's now-infamous metallic mini dresses, and Jessica kept things super authentic by donning a blonde wig. She captioned the cute snap with a line from the hit 1997 movie, writing that they "invented Post-Its."