Sofia Richie matches her $650 flip-flops with a maternity dress she designed herself.

Sophia Richie Grainge's maternity style remains classy and effortless throughout her pregnancy. Trench coats, elegant capes, cozy cashmere pieces, and, somehow, jeans. Currently, Richie Grange is in her ninth month of pregnancy and entering her third trimester. The weather is warming up and her wardrobe is following suit.

Yesterday, the influencer took a laid-back approach to maternity dressing, wearing a loose-fitting peasant dress and flip-flops while shopping for baby clothes in Beverly Hills. But of course, these aren't the sandals and sundresses you might pick up at the last minute and during a Target haul before hitting the beach.

Richie Grainge's black and white floral dress is a collaboration with the brand Solid & Striped. The Corrina Dress, a maxi-length, bodice with short puff sleeves and smock, cost $348 and was the least expensive item in her outfit. Richie Grainge paired this relaxed frock with The Row flip flops (rubber) with black leather insoles and white rubber straps.

She accessorized with a baby pink Chanel flap bag (she is having a girl, after all), black Saint Laurent round frame acetate sunglasses, a Patek Philippe Aqua Nautiluce green dial watch (these cost $60,000), a black face masks (brand unknown) to accessorize.

Richie Grainge has become increasingly popular over the past few years for his quiet upscale fashion, and he has maintained it throughout his pregnancy. But this more casual look may point to a new style era for the model as she transitions into motherhood.

"I've learned more in the last six months than I've ever learned in my life," she told Vogue magazine in January.

"And I know that everything I'm going through is completely normal, that all of the ups and downs are normal. It made me feel better to know that other people go through emotional ups and downs, too. That was comforting to me."

Scroll down to buy Richie Grainge's look.