The threat of rain added a nice bit of suspense to the Oscar arrivals, but Hollywood always knows when the cameras are on, so the rain stopped and the sun shone just as the red carpet arrivals kicked into high gear Sunday afternoon.

In general, it was an afternoon of teamwork. The “12 Years a Slave” producers Dede Gardner, Jeremy Kleiner and Anthony Katagas arrived together, beaming to Variety about the reception the film has received, and accepting congrats that Plan B had not only this but “World War Z” for the year.

The “Nebraska” team seemed ebullient, with producers Albert Berger and Ron Yerxa pairing up with scripter Bob Nelson.

Sometimes the teams were familial. Rachel Winter, one of the producers of “Dallas Buyers Club” (along with Robbie Brenner) walked the red carpet holding hands with her husband Terence Winter, nominated as writer of “The Wolf of Wall Street.” The two joked that they barely have had time to spend together and pretend to be feuding over whose film will win, but they

And David O. Russell, a bundle of energy, arrived with his partner Holly and his parents.

When it comes to teams, though, it’s hard to top Brad Pitt and Angelina Jolie, who looked spectacular, seemed calm, and were friendly with the crowds and with the media.

Sometimes the teams were inadvertent. There was a paparazzi frenzy when Cate Blanchett, Jennifer Lawrence and Lupita Nyong’o arrived nearly simultaneously.