Picture this — a beautiful day in the courtyard at the Chateau Marmont in LA complete with a fashion show and some very stylish stars sitting in the front row. That was the relaxed, carefree setting at the CFDA and Vogue Fashion Fund event yesterday, where the 10 designer finalists debuted their collections.

Diane von Furstenberg opened the event with a heartfelt tribute to Oscar de la Renta [1], and her cohost, Reese Witherspoon [2], looked gorgeous in a bright floral dress by the late designer. But Reese wasn't the only one who enjoyed the day in a very stylish ensemble. From Miranda Kerr [3] in a chic embellished suit to Camila Alves and January Jones [4] in demure neutrals, it was nice to see how the stars dressed for the daytime.

And because Cassandra Grey hosted a dinner party the night before, we also got a dose of nighttime glamour, thanks to appearances from Kim Kardashian [5], Jaime King, and Dianna Agron [6]. On that note, keep reading to see the day-to-night outfits our favorite stars put on when they stepped out in the name of fashion.

January Jones

January Jones [7] at the CFDA/Vogue Fashion Fund event.

Camila Alves

Camila Alves at the CFDA/Vogue Fashion Fund event.

Reese Witherspoon

Reese Witherspoon [8] at the CFDA/Vogue Fashion Fund event.

Diane von Furstenberg

Diane von Furstenberg at the CFDA/Vogue Fashion Fund event.

Miranda Kerr

Miranda Kerr [9] in an Emilio Pucci suit and an Astley Clarke necklace at the CFDA/Vogue Fashion Fund event.

Dianna Agron

Dianna Agron [10] carrying an Edie Parker clutch at the CFDA/Vogue Fashion Fund event.

Hailee Steinfeld

Hailee Steinfeld at the CFDA/Vogue Fashion Fund event.

Jaime King

Jaime King wearing a Matthew Damhave dress, Jason Wu shoes, and Oscar De La Renta bag at the CFDA/Vogue Fashion Fund event.

Dakota Johnson

Dakota Johnson [11] at the CFDA/Vogue Fashion Fund event.

Amber Valletta

Amber Valletta at the CFDA/Vogue Fashion Fund event.

Camilla Belle

Camilla Belle wearing a Monique Lhuillier dress and carrying an Edie Parker clutch at the CFDA/Vogue Fashion Fund event.

Brooklyn Decker

Brooklyn Decker at the CFDA/Vogue Fashion Fund event.

Michelle Monaghan

Michelle Monaghan at the CFDA/Vogue Fashion Fund event.

Alison Brie

Alison Brie [12] at the CFDA/Vogue Fashion Fund event.

Bellamy Young

Bellamy Young at the CFDA/Vogue Fashion Fund event.

Kim Kardashian

Kim Kardashian [13] at the CFDA/Vogue Fashion Fund evening cocktail party.

Jenna Lyons and Hamish Bowles

Jenna Lyons and Hamish Bowles at the CFDA/Vogue Fashion Fund evening cocktail party.

Jaime King

Jaime King wearing a Wes Gordon dress and shoes, a Calvin Klein clutch, and Jennifer Fisher jewels at the CFDA/Vogue Fashion Fund evening cocktail party.

Dianna Agron

Dianna Agron [14] at the CFDA/Vogue Fashion Fund evening cocktail party.