Sheer simplicity. At BCBG, Max and Lubov Azria continued the exercise in functional minimalism they began last Fall with a Spring parade of airy silk dresses and jumpsuits, both short and long, so light they very nearly threatened to float away. The show opened with a grouping in white that imperceptibly shifted to an ash gray and then cycled through a neutral rainbow before landing on black. Anything bright was relegated to a cameo appearance: a tiered overlay here, a single shock-pink frock there. These hot spots brought a point of difference into a potentially repetitive collection—as did the touches of femininity added by tonal embroidery and lace. The latter was a standout on the finale dress, a long sheer tank that was foreshadowed by a lacy image printed elsewhere on silk. For a brand that can occasionally take a head-scratching direction, this was a happy little moment of serenity that seemed to please all assembled and that definitely has commercial legs.