Repeat pink in two places
A short pink puff-sleeve dress and a pink wide-brim hat already make a distinct combination. Pale strappy sandals keep the finish quiet. A pink bag is unnecessary to connect the colours; cream or another muted neutral can provide useful breathing room.
Compare the dress and hat in daylight. Precise matching is optional, but noticeably different pink families create a different effect from a closely coordinated pair. If both pieces feel like too much colour, wear a pale hat with the dress or keep the pink hat for a neutral outfit.
Allow room for the sleeves
Puff sleeves add volume around the shoulders. Check that they remain comfortable while raising your arms and are not heavily compressed beneath a jacket. A relaxed open layer can be easier than a narrow blazer, particularly if you need it only later in the evening.
Keep jewellery around the neckline relatively restrained when the sleeves and hat are your main details. Small earrings may be enough. The outfit does not need as many decorative additions as possible; clear choices make it easier to wear and let the existing shapes remain visible.
Test the short length against your day
Sit, climb a step and bend carefully to assess the dress length realistically. If you expect plenty of movement, a longer version may feel more useful. The same pink colour idea works with a knee-length dress and does not require a particular hem height.
Choose sandals for fit and the route. Pale flat shoes can provide the same quiet finish when straps or heels feel impractical. The hat should also fit well enough that you do not need to hold it constantly in wind. Choose a bag that accommodates what you actually need before settling on the smallest decorative option.
