The 42-year-old, who was co-hosting the event in Santa Monica, chose an aptly coloured fuschia pink dress by iconic French fashion house Dior, which featured an asymmetric flared waistline, with a fitted knee-length pencil skirt.
Jennifer Garner co-hosted the Pink Party in Santa Monica
Jennifer accessorised her vibrant dress with a pair of black peep toe stilettos by Christian Louboutin, and a patent Roger Vivier box clutch bag.
The Dallas Buyers Club actress also added sparkling jewellery to complete her outfit, opting for white Anito Ko bracelets and dazzling rings by Shay.
To complement her eye-catching bright pink dress, Jennifer kept her make-up simple, opting for a hint of pale pink blusher and nude lip. The American actress also left her hair down and swept to the side for a laidback yet elegant style.
Celebrity stylist Rachel Zoe showed her support for close friend Jennifer as she joined the 13 Going On 30 star for the event, which saw a starry guestlist including Bill and Giuliana Rancic and Pretty Little Liars star Shay Mitchell.
Celebrity stylist Rachel Zoe supported close friend Jennifer at the event
The 43-year-old fashionista showed off her renowned style credentials in a cream halterneck dress which featured tiers of ruffles. When it came to accessories, Rachel opted for dazzling jewellery by David Webb, and a small gold clutch bag.