Duff smiles wide while hanging out with her little guy, Luca, in Beverly Hills. Plus: Zac Efron, Justin Bieber & more!
Published: Tuesday Jan 28, 2014 | 07:00 PM EST
More from PEOPLE
- Josh Duhamel Shares Sweet Birthday Message to Fergie
- Read the Cover Story: At Home with Britney Spears and Her Boys!
- New York Jets Help High Schooler Ask Boy to Prom (VIDEO)
- Amanda Knox Speaks After Murder Conviction Overturned: 'I'm So Grateful to Have My Life Back'
- Kourtney Kardashian Posts Flashback Photo of the Night She Met Scott Disick