Great — here are practical places and options for buying smart‑casual clothing in Malaysia, broken down by type so you can pick what fits your style and budget.

1. Big high‑street brands (easy, consistent smart‑casual pieces)

• Uniqlo — good for clean basics, knitwear, chinos and casual blazers. (See UNIQLO Malaysia/store info.) (uniqlo.com)
• Zara and Massimo Dutti — more fashion‑forward smart‑casual shirts, blazers and trousers. Zara has many Malaysia outlets; Massimo Dutti also has stores in major malls. (zara.com)
• H&M — offers “Smart” and casual lines for men and women (stores across major malls). (hm.com)

2. Where to shop in person (Kuala Lumpur hubs with the widest selection)

• Suria KLCC, Pavilion KL, Mid Valley Megamall, 1 Utama, Sunway Pyramid and IOI City Mall — these malls host the international brands above plus local labels and department stores, so they’re great one‑stop places to build a smart‑casual wardrobe. (suriaklcc.com.my)

3. Local brands & department stores

• Malaysian chains and department stores (Padini/Padini Concept Store, Parkson at select malls, local labels) carry versatile smart‑casual options at mid‑range prices. Many of these are available inside the big malls listed above. (midvalley.com.my)

4. Online marketplaces (fast, big selection, good for comparing prices)

• ZALORA — Malaysia’s major online fashion marketplace with many local and international labels. (zalora.com.my)
• Shopee and Lazada — huge selections from budget to mid brands, and many local designers; useful for quick bargains or unique local labels. (malaymail.com)

5. If you want higher quality / tailored smart casual

• Look for local made‑to‑measure tailors (available in KL and Penang) or visit premium brands (Massimo Dutti, COS, Brooks Brothers, etc.) inside Pavilion / Suria / Mid Valley for elevated pieces. (See mall/store listings above.) (pavilion-kl.com)

Quick shopping tips for smart‑casual:

• Focus on well‑fitting chinos or tailored trousers, unstructured blazer or lightweight sportcoat, clean button‑downs or polos, and loafers/derbies.
• Buy basics (tees, chinos, knitwear) at Uniqlo or H&M and invest in one or two mid‑range blazers/shoes from Massimo Dutti, Zara or local labels.
• Try items on in‑store when fit matters; use online shops (ZALORA, Shopee, Lazada) to compare prices and read reviews before buying.

If you tell me the city you’ll be in (Kuala Lumpur, Penang, Johor Bahru, etc.) I can give a short, focused list of specific stores/malls near you and a couple of store addresses or online links.