Christina Aguilera is said to be the next celebrity designer for London fashion chain TopShop. Topshop owner Philip Green has asked the pop star to design a new collection for the label. The “Genie in a Bottle” singer is expected to earn over $1 million per range that she will design for the Britain’s foremost fashion range. Topshop also sells a collection by British supermodel Kate Moss.

However, the 28-year-old singer’s designs will not replace Moss’ and both of the stars will continue to do separate collections. Christina’s designs are expected to appeal to a younger shopper than Kate. The 34-year-old supermodel has created seven collections since she was signed by Green in May 2007. Moss recently signed a new deal with Green for three more years and she will be developing lingerie and accessories on top of her fashion collections.

Some pictures of Christina Aguilera wearing all white with husband Jordan as she celebrated her 28th Birthday at the Osteria Mozza, Hollywood.

Some pictures of Christina Aguilera launching her new perfume “Inspire” at Macy’s.

Some pictures of Christina Aguilera arriving at 2008 Grammy Nominations Concert Live.