Happy Birthday, Victoria Beckham! The singer-turned-designer, who turns 40 today, is not only one-fifth of the Spice Girls (AKA ’90s pop culture royalty) but an acclaimed designer, whose sleek Fall 2014 collection, comprised of black-and-white pieces and chunky chains, had us swooning. And when it comes to developing your best wardrobe, Beckham has an important tip to keep in mind.

“At the beginning, you should try everything. Good, bad, awful,” says Beckham. “As you get older, you start getting a good idea of what suits you. Trust your gut, not a stylist or a rule maker.” Hear, hear!

From Posh Spice to posh designer, click here for Victoria Beckham’s evolving looks.