Nicole's All Smiles at Stella's Soiree

Nicole and Joel hit Stella McCartney's party together, along with a slew of other celebs

Seems Nicole Richie's not worried in the least about Joel Madden.

Hours after a picture of Joel and Lindsay Lohan looking deceptively cozy got out yesterday, Nic arrived for a screening of The Party at Stella McCartney's West Hollywood store with her man in tow.

The twosome happily posed for pics together at the fete, where a smiling Nic also hung with Stella, Angie Harmon and Rashida Jones.

Looks like there's no trouble in paradise after all.

For more from the bash, check out the Party Pics: Hollywood gallery.