Britney Spears and Paris Hilton have been named the worst dressed celebrities of 2006, according to an annual list from US fashion critic “Mr. Blackwell.”

The poison-penned arbiter of style described newly single Spears and celebrity socialite Hilton as “two peas in an over-exposed pod! Style-free and fashion deprived.”

Spears and Hilton have been regularly photographed together enjoying nights out on the town in the wake of Spears’ decision to file for divorce from husband Kevin Federline.

Next on the list was Camilla Parker-Bowles, the wife of the future king of England, Prince Charles, dubbed by Blackwell as “The Duchess of Dowdy.”

Party-loving teen idol Lindsay Lohan was next, with Blackwell saying her dress sense had gone from “adorable to deplorable.”

Christina Aguilera, Mariah Carey, Paula Abdul, Sharon Stone, Tori Spelling, Sandra Oh and Meryl Streep rounded out the list.

Blackwell did have some kind words, however, praising British actress Kate Winslet, Angelina Jolie, Beyonce and Katie Holmes for their sense of style.

Fashion critic Blackwell has issued his “ten worst-dressed women of the year” awards annually since 1960.

Source: AFP