Jennifer Lopez, Ryan Lochte, Robert Pattinson: Hottest Sightings of the Day (PHOTOS)

The star answers questions about KStew and his new movie.
From sea to shining sea, the celebrities were out and about for both work and play.

Jennifer Lopez was definitely working it as she put on a killer performance Thursday night at the Staples Center. The multi-hyphenate celebrity is currently on tour with Enrique Iglesias. Friday morning, “boy-band” or should we say “man-band,” 98 Degrees reunited for a performance on the Today Show stage in Rockefeller Plaza.

Who else did we see “at work” and “at play?”

Also working were Kelly Rutherford and Barry Watson, who can be seen taking a break from a busy day on the New York set of Gossip Girl.

Meanwhile, Matthew McConaughey was seen speaking with kids in Venice, Calif. for the second annual P&G GIVE Education “School the Nation” campaign.

Over on the east coast, Robert Pattinson was spotted — presumably at play — in New York City hopping from the Bowery Hotel to an East Village bar. The Twilight actor has been busy running a media blitz to promote his new movie Cosmopolis while dodging questions about his ex-girlfriend, Kristen Stewart.