Plave's mmmm Baby Pop-Up in Hongdae: What to Expect

Plave's official mmmm baby pop-up just landed in Hongdae, and if you're a Plie planning a Seoul trip, this is the kind of experience worth building your itinerary around. The pop-up is a collaboration with LINE FRIENDS, centered on the baby mmmm character universe — think pastel tones, member messages scattered throughout the space, and photo zones designed to feel like stepping into Plave's world rather than just browsing merch.

The pop-up is hosted at K-pop Square Hongdae (서울 마포구 양화로 141), right on Hongdae's main strip, so it's easy to spot and cluster with other neighborhood stops. The nearest subway is Hongik University Station. It's running through February 22, 2026, open daily 11AM–10PM. Entry is free, and the space is split across two floors: the first floor has the merch zone and photo areas; the second floor handles checkout. Fair warning — most goods are already sold out or running low, so if you're coming specifically to buy, check the real-time inventory QR code posted at the entrance before you commit to the queue.

Here's the practical setup: there's no advance booking. You register your phone number on arrival, get a KakaoTalk notification when it's your turn, then line up to enter. The blogger arrived at 6AM and got ticket number 40-something, so expect early-morning queues if you want a low wait time. The good news is you don't have to stand in line the whole time — you can explore Hongdae and come back when your number is called. Entry flow is managed but busy.

What actually makes this pop-up special isn't the goods (most are gone) — it's the experience. The space is filled with member messages and a cohesive baby mmmm visual identity. Photo zones are plentiful and thoughtfully designed. And here's the highlight that fans camp out for: the mmmm character mascot occasionally appears in-costume throughout the day with no set schedule. The blogger saw both mmmm and mua doing a dance, greeting fans in line, and posing for photos. If you're at the front of the queue when word spreads that the mascot is coming, you'll catch it.

One practical note: if you spend over 100,000 won, you get a free baby mmmm reusable bag. Grab your receipt at the bottom of the stairs before heading to the second floor to pay — don't miss that step. The blogger notes this pop-up feels less like a merch-focused event and more like a fan experience space, which is exactly why Plies are prioritizing it.

If you're visiting Hongdae and have Plave on your playlist, block out an hour or two — longer if you want to catch the mascot appearance. Go early (pre-dawn if you're serious), check inventory before you queue, and treat it as a photo moment rather than a shopping trip. The pastel baby concept and member-curated details make it worth the wait.