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From the junior exec who wants to stand out and shine to the tough-as-nails boomer showing her softer side, textured skirt suits suit every age. Amber Valletta takes them out for a spin.

In order to reduce vehicle weight and thus improve fuel economy, aluminium (Al) alloys have been increasingly adopted as contact surfaces such as piston skirts and cylinder liners in current engines. In general, hypereutectic Al–Si alloys are used, in which hard silicon grains are embedded in a softer Al–Si single phase matrix. It is reported that after rubbing, the matrix is removed to leave silicon grains protruding from the surface. However, the response of the counter-surface by these silicon grains is rarely investigated. In this study, mini traction machine–space layer imaging (MTM–SLIM) has been used to monitor tribofilm formation in situ and investigate the evolution of both surfaces in the contact of a steel ball on an Al–Si disc lubricated by ZDDP solution. In low-load conditions, the top layer of aluminium on the Al–Si disc is removed physically to leave silicon grains protruding from the surface, while ZDDP tribofilm pads are formed mainly on the grains. On the counter-surface (steel ball), ZDDP tribofilms are formed and build up with no wear scars. In high-load conditions, deep gaps are observed to form initially round the silicon grains on the disc. During rubbing, these become shallower, while the silicon grains start to protrude. On the steel ball, ZDDP tribofilm is generated initially over the whole rubbing track, but then the tribofilm in the middle of the track is almost completely removed by rubbing against the protruding silicon grains. Wear of the underlying steel surface then ensues.

Wall Street may have the jitters, but this time, fashions not hiding. A sophisticated new assurance colors the fall collections. Strong looks, subtle detail, and extravagant pieces are giving us plenty of reasons to buy.

Play's the thing for spring, with an all-star roster of designers taking its cue from classic sport clothes. From rugby shirts to tracksuits, this is a very winning season.

When it comes to dressing well, the rules are simple: slimly cut dresses, pants, and tops in fabrics that stretch or shine.

Gardenias, moonbeams, doves...these all-white looks remind us of everything pristine, innocent, enchanting.

When Karl Lagerfeld unveiled his couture collection for Chanel in the stately rooms of Paris's Hotel Ritz, it was more than just a nod to Coco. It was an all-out, showstopping tour de force that featured superb silhouettes, lavish details, and one gold goddess dress to die for