A Land

No more Instagram pre-ordering. Seoul’s trendy multilabel store just launched its first branch in Thailand at Siam Center. With 15-plus branches around the Korean capital, plus a handful in Hong Kong, the store is known for its eclectic mix of in-demand foreign street brands and rising Korean designers. Here, they look to be leaning more on Siam’s K-pop obsession, with men’s and women’s pieces from up-and-coming names like Ampersand, Kirsh and Melroy. The very good news is there’s only a slight mark-up on prices, meaning cool items like a Good Rhyme pink T-shirt will set you back just B1,190 or Under the Air ripped short jeans just B1,990. They also sell makeup and skincare products from the likes of Heimish and Land Museum.
2/F, Siam Center, Rama 1 Rd., 02-658-1000. Open daily 10am-10pm
 

Daddy and the Muscle Academy

Candy colors are becoming a big trend on Siam Square, with this new ‘90s-style, pastel-colored shop from Instagram-famous retailer Daddy and the Muscle Academy. Inside, old-school details abound such as the school lockers used as product shelves and vintage paintings on the wall. Grab the girly “Ellie” dress at B1,590, the cute “Academy” T-shirt (B590) or the painted “Juli Baker and Summer” tote (B1,500). 
Siam Square Soi 11, 063-894-6954. Open daily noon-9pm
 

Matchbox Pinkplanter

Resideing in an all-pink, three-story shop-house, this bigger version of Matchbox on Siam Square Soi 11 collects a wide range of affordable Thai designer pieces mostly from Instagram brands. The first floor displays dailywear from brands like Sugary, Strip&Tie, Chamnii, Ethereal and Humming Tree. Up on the second-floor, you'll find swimwear and sportswear from the likes of Sugarless and Playoff, plus a corner devoted to cosmetics. Prices here start from  B290 rising to around B4,000.
Siam Square Soi 7, 095-505-5818. Open daily noon-9pm
 

Roger Vivier

Taking over the space on Siam Paragon’s main floor that used to be Chloe is a boutique from luxury Parisian shoemaker Roger Vivier (under PP Group, the same importer which brings in Loewe and Emilio Pucci). By chance, this boutique adds another candy color spot to Siam with its all-pink wall and ceiling that contrasts with a black and white striped floor. The brand also just launched a Thailand-only shoe collection for its local fans. Grab them here at B32,500.
G/F, Siam Paragon, Rama 1 Rd., 02-610-8000. Open daily 10am-9pm
 

Topman

No need to walk for 10 minutes from BTS Siam to CentralWorld to shop at Topman anymore. The menswear line from British high-street empire Topshop has branched out to Siam Discovery. Even though the size is more compact, it’s still packed with almost everything you can get from the CentralWorld store. Go grab this season's new arrivals like a pair of ripped denim shorts (B1,990), multi-texture swim shorts (B1,150) or a simple pair of  faux suede desert shoes (B1,990). 
M/F, Siam Discovery, Rama 1 Rd., 02-658-1000. Open daily 10am-9pm