Jessica Simpson Zales diamond bathtub billboard...

They say diamonds are a girl's best friend, and it seems that Jessica Simpson simply can't get enough of them with her bathtub filled to the brim with the sparkling precious stones.

The ad for the Jessica Simpson Collection at Zales jewelers is certainly an attention grabber.

This bedazzling billboard was snapped at the corner of Santa Monica Boulevard and La Cienega Boulevard in West Hollywood on January 30, 2012.

Happy Valentine's Day!

UPDATED: Here's another vibrant billboard for the Fashion Star's own website snapped in the same West Hollywood location on April 1, 2012.
UPDATED: Who knew that Jessica Simpson liked lawn croquet (although she probably couldn't spell it). This garden party billboard for her own fashion line was snapped in the same site on May 5, 2012.

UPDATED: Here's Jessica rocking a summer hat, just in time to enjoy L.A.'s sunshine and beautifully clear blue skies.

This beautiful billboard was sighted on June 5, 2012 in the same West Hollywood location.

UPDATED: A fashion line, jewelry and now a new fragrance, Jessica Simpson is certainly leveraging her name to shift some product.

This floral and Summery billboard for her new Vintage Bloom perfume was snapped on July 9, 2012.

UPDATED: Here's a new Jessica Simpson fashion billboard which for the first time doesn't feature the celebrity herself.

Cleverly though they have used posters of her within the creative (maybe taken during her pregnancy or whilst she's recovering and trying to lose the baby weight). This ad was snapped on October 13, 2012.