Nicole Richie planning to take over the world of fashion

Nicole Richie is planning to launch her own cosmetics line. The socialite-turned fashionista — who’s gearing up to add bags and sunglasses to her Winter Kate and House of Harlow 1960 collections for spring and fall 2011 — says she’s wants to dominate the world of clothes and accessories.

“I have been traveling all over the world, meeting with buyers, doing appearances and meeting my customers to get their feedback,” she told WWD.

“Now I feel I know them very well, and have been designing for them.

“The fun part is experimenting with different looks. A month ago I had long dark hair and then I chopped it all off and bleached it blonde.

“That’s what fashion is all about.”

Meanwhile, Nicole is reportedly planning to marry Joel Madden at her father’s house.

The reality TV star — who has a two-year-old daughter Harlow and 14-month-old son Sparrow with her fiance — will reportedly tie the knot in the garden of her singer dad Lionel Richie’s Beverly Hills home early next month.

“Christmas has always been about family and faith for Nicole and Joel, so there is no better time of the year for them to wed,” a source said.

According to the insider, the couple will be joined at her dad’s home by 75 of their closest friends and family, including DJ Samantha Ronson and singer Christina Aguilera – who is rumored to be performing after the ceremony — for the service.

Harlow will be flower girl for her parents at the wedding, while Nicole’s best friend Masha Gordon will be maid of honor and Joel’s twin brother Benji will be best man.

The couple — who have been dating for four years and got engaged in February this year — will then spend the festive season with their families before jetting off for their first holiday as newlyweds.

“Nicole and Joel will spend Christmas with their family after the wedding, before heading off on honeymoon,” the source added.