A look at some of the "100 days out" festivities from today in New York and London:
Former U.S. Olympic greats Carl Lewis, Shannon Miller and Greg Louganis meet up with London hopeful Allyson Felix (second from right) in Times Square. Felix is attempting to pull off the 200-400 double this summer.
Fairly quiet in London? A handful of official countdown clocks, like this one in Trafalgar Square, reminded the locals of what's to come in July.
Ralph Lauren is charged with designing the looks for U.S. Olympians this summer. We got a sneak peek at the closing ceremony outfits Monday. Rebecca Soni, Aly Raisman, Tony Azevedo, Bryan Clay, Diana Lopez and Steven Lopez modeled them for "Today."
Performance artist David Garibaldi worked his magic in Times Square. (Check out his work here.)
Missy Franklin, whom some have called "the female Michael Phelps," checked in with "Today" show host Matt Lauer in New York.