Kate Walsh was beaming as she co-hosted Planned Parenthood's "Birth Control Matters" entertainment-industry briefing on Jan. 25 in Hollywood.

The 43-year-old creator of the Boyfriend beauty line, available on HSN, co-hosted the event with Amber Tamblyn and wore a peachy Stella McCartney blouse and jacket, Citizens of Humanity flared jeans and Anita Ko jewelry.

Walsh, who once donned a sushi and sashimi dress for a taping of Jay Leno, effortlessly combined this season's hottest trend, '70s-inspired wears, with tailored separates.

Excited for the event, the "Private Practice" star tweeted: "Grateful to be co-hosting planned parenthood's "birth control matters" w/Amber Tamblyn!!"

Meanwhile, Blake Lively wore a similarly golden Prabal Gurung blazer. Do we spot a trend?