Move over red lips, blue is in vogue now. Rihanna was recently spotted with a blue lip colour to promote her "Rihanna for River Island" clothing line in London on Tuesday. The "Umbrella" singer, who recently debuted her hair in a sort of black mullet look, wore a see through black top from her collection but covered her modesty with a jacket.

The 25-year-old songstress was seen promoting her new collection, exclusively designed by her at the London's CUT restaurant. The collection which consists of lingerie, caps, hooded jackets, denims, leggings, tops, dressed and much more of the star's favourite, hits select stores on Thursday, September 12.

RiRi was joined by supermodel Cara Delevingne and the duo was having fun during the promotion. Rihanna has been spotted promoting her designs from her AW13 collection on several recent occasions. Delevingne, who was dressed in a yellow T-shirt dress, accompanied the singer through all night.

The singer posted intimate snaps of her on her Instagram page where she is seen wearing her lingerie collection. The Rihanna panties and thongs have RiRi or Rihanna written on them.

The collection of jackets and denims has a famous tagline "G 4 Life" written on them. So is it Rihanna's new way of celebrating life. The "Rihanna for Riverland" collection comes at an affordable price and looks quite wearable too unlike other star collections which only look good on models. The price tags too seem to be within the reach of her fans and targets students and youngsters.

"UK Navy, I'm in London today launching the Autumn #RihannaforRiverIsland range. Head to http://bit.ly/RIRIPREORDER to place your order NOW!"," Rihanna tweeted earlier today, promoting her new range.

Is it only Rihanna who could carry the blue-lips look teamed up with a mullet or would this new look or is the colour of lips going to set a new trend just like her hot selling lip colour RiRi Red?