A brown jacket with pale trousers creates a divided colour arrangement in this reference. The waistcoat is close to the jacket’s colour, while a light crew-neck top appears above it. Pale shoes continue the lower area’s light tone. Unlike the coordinated patterned reference, this outfit separates the upper and lower portions more clearly. That comparison is useful if you want a waistcoat-centred look without repeating the same pattern across every piece. It does not date the outfit or establish its material.
Try a similar division with pieces you already own, beginning with the meeting point between waistcoat and trouser waistband. Sit and stand to see whether that transition stays as you want. Compare the crew-neck with an appropriate shirt if your invitation calls for one. Then check the trousers with your actual shoes rather than selecting a hem from the image. The open jacket makes the inner layers visible; also try the real jacket fastened if you expect to use it that way. This gives you a complete comparison instead of assuming that separate pieces automatically fit together.