Kate Upton, Keira Knightley, Hilary Duff & More Hot Celebrity Sightings For January 15, 2014

So many photos, so little time. We spotted tons of celebrities out and about and attending events.

Kate Upton and her boobs were definitely out at the celebration of Sports Illustrated’s swimsuit issue.

Keira Knightley kept it chic at the airport as she arrived in LA for the premiere of Jack Ryan

And newly single Hilary Duff was spotted heading to the gym, clearly trying to keep life normal.

Launch the gallery to check out all the pics, and find out who was where and when!