Katy Perry’s new ruby from John Mayer isn’t an engagement ring

Katy Perry is sporting a heart-shaped ruby ring on her finger, a gift from beau John Mayer. The ring set off a flurry of speculation that it was an engagement ring. But relax, everyone. It was a Valentine’s Day gift, according to the jeweler who made it. [People]

Blackeyed Peas frontwoman Fergie seems to be expecting a baby with husband Josh Duhamel, according to a tweet. That may be why she’s recently been seen at public events wearing looser-than-normal (for her) clothing. Or she might just be getting a kitten. (The tweet was a bit ambiguous.) [Los Angeles Times]

Rihanna’s spring-summer fashion collection for British retailer River Island debuted in a runway show in London on Saturday. The collection, co-designed with costume designer Adam Selman, includes jumpsuits, swimsuits, bandeau tops and asymmetric maxi dresses in florals, neon and tie-dye. [Cut]

Rihanna is reportedly being paid $1.2 million for designing the collection. [New York Times]

Michelle Obama jokes in an interview with Rachael Ray that her new bangs came as the result of a mid-life crisis -- and changing a hairstyle seems to be about the wildest thing a first lady can do. The interview is scheduled to air Wednesday. [Cut]

Belgian designer Christian Wijnants was awarded the International Woolmark Prize -- given for creative use of merino wool -- at a ceremony in London on Saturday. Wijnants uses Japanese shibori tie-dying techniques on his hand-knit woolen garments. [WWD]

That was fast. Nicole Kidman wore a form-fitting blue dress with a gold-sequined turtleneck collar to the London premiere of “Stoker” on Sunday. Only hours earlier, L’wren Scott had shown the dress as part of her London Fashion Week presentation of the fall-winter 2013 collection. [Cut]

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New York Fashion Week fall-winter 2013 highlights