Credit: Jon Kopaloff/FilmMagic

One month after giving birth to daughter Haven Garner, Jessica Alba is already back on the red carpet and she's looking more gorgeous than ever.

The actress, 30, attended the 2011 Alma Awards in Santa Monica, California on Sunday night in gray print strapless Michael Kors gown, which was  cinched at the waist with a silver belt. She accessorized with a silver clutch and a gold studded necklace.

Recently, Alba announced that she was kicking off her post-baby slimdown.

"I did my first day of workout since I had the baby," Alba tweeted Aug. 30. "Just cardio for 40 minutes."

The svelte star explained that she got the A-OK from her physician. "My doc told me I could start after 2 wks," she wrote. "I'm going light, stationary bike and elliptical."

The second-time mom (she and husband Cash Warren also have daughter Honor, 3) offered advice to others on Twitter about post-baby diet, too. "I would keep your diet as healthy as possible 6 days a week and give yourself one day to indulge."

Other Alba-approved post-baby fitness tips? "Start with walking and throw in 3 sets of lunges 20 per leg. Your could do it while strolling your baby."