Nicole Richie Celebrates Birthday with Joel Madden, Cameron Diaz, Kate Hudson, & More at Disco-Themed Party!

Nicole Richie and husband Joel Madden wait for their ride as they make their way out of disco-themed birthday party on Friday night (September 23) in West Hollywood, Calif.

The newly 35-year-old fashion designer was joined at her party by brother-in-law Benji Madden and his wife Cameron Diaz as well as close friend Kate Hudson.

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Nicole took to Instagram the next day to share some pics from inside her party.

Other guests at the party featured in her post were Rachel Zoe, Jessica Alba, and dad Lionel Richie.

Check out Nicole‘s Instagram post below!

20+ pictures inside of stars leaving Nicole Richie‘s birthday party…