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Rihanna, the Bajan pop sensation, has designed a small collection of casual jeans, T-shirts and underwear for Giorgio Armani’s Emporio label.

Her trademark “R,” scripted in “Zoro” style slashes, is, for this small collection, fused to one of the world’s most iconic fashion logos – the stylized Emporio eagle. She – of questionable taste – has attached her fashion sense to a style powerhouse.

The 23-year-old singer, who has appeared in advertisements and even a video for the Milan-based brand, is now apparently trying her hand at fashion design.

The association with Armani represents yet another fusion between showbiz and fashion design. Some Hollywood celebrities have modelled for designers (Dakota Fanning for Marc Jacobs) and others have simply worn their clothes on the red carpet. And a few have actually lent their high-profile names as putative designers.

For Armani’s secondary collections — Emporio Armani Underwear and Armani Jeans — the sultry performer has created two styles of jeans, two T-shirts and underwear.

This is not the first time fashion labels have sought celebrity participation in the design process. In recent memory Sarah Jessica Parker has designed a collection for Halston. And — to disastrous results — in 2009 Lindsay Lohan designed a complete collection for Paris-based label Ungaro. It was unanimously dismissed by critics as an artistic flop.

Celebrities including Jessica Simpson, Mary Kate and Ashley Olsen, and Kanye West all design collections under their own names.

Rihanna, to her credit, has started small — skinny jeans, T-shirts and casual underwear — a far cry from the sultry fishnets and jewel-encrusted bras she’s worn on stage. The collection also includes a black biker jacket and a canvas bucket bag.

One T-shirt features an illustration of the singer’s high-profile face on a mottled animal print background. Another is emblazoned with the newly fashioned Rihanna/Emporio logo. Since July Rihanna has been the face of the two collections, appearing in advertisements in tight jeans, a cropped sweater, biker boots and short, blond hair. There’s even an Armani video of Rihanna shot in film-noire style in which she strips out of a sultry cocktail dress into casual jeans.

Before attaching his brand to Rihanna, Armani recruited actress Megan Fox of Transformers to promote his Emporio brand, though she didn’t assume design duties.