How Do You Bring Twitter Down?

Post a superstar selfie and beg fans to make history by retweeting the photo.

Oscar host, Ellen DeGeneres, did just that during tonight's Academy Awards telecast and -- guess what? -- it worked.

Pictured:  Jared Leto, Jennifer Lawrence, Channing Tatum, Meryl Streep, Ellen DeGeneres, Julia Roberts, Kevin Spacey, Brad Pitt, Bradley Cooper, Lupita Nyong'o, Angelina Jolie and Peter Nyong'o (the only non-celebrity...until now).