This may refer to Issue 40 of the magazine or a specific "40th" commemorative feature.
Something Magazine is known for high-concept fashion photography and intimate, minimalist interviews. A "piece" featuring "Lacey" (likely referring to a specific model or creative) would typically be a multi-page spread or a digital feature. 40 somethingmag lacey
In the context of this magazine's typical collaborators, this may refer to a model or a specific photoshoot subject. This may refer to Issue 40 of the