Madonna and her 13-year-old budding fashionista daughter Lourdes will launch a line in teen clothing called Material Girl in the US in August.

The mother-daughter collection, which will be exclusively available at Macy's stores, will focus on affordable back-to-school clothes but will also include shoes, handbags and jewellery.

They are aiming to add a fragrance in 2011.

The line is a joint venture between Madonna and the Iconix Brand Group, which purchased the Badgley Mischka brand in 2004 and includes other leading labels such as Mossimo and Ed Hardy.

"The Material Girl collection was inspired and designed in collaboration with Madonna and her daughter Lourdes, along with Iconix Brand Group's in-house fashion department," Iconix said.

As part of the hook-up, Macy's will retain the right to launch additional brands with the MG (Material Girl) icon in the future.

"We are excited to announce the first in a series of new brands that will be developed under our partnership with Madonna," Iconix chief executive Neil Cole said.

"Material Girl has a powerful retail partner in Macy's and we look forward to working together to deliver an innovative launch for our consumers."