ET was there as Madonna and her daughter Lourdes, nicknamed "Lola," walked the pink carpet at Macy's in New York City, and the mom and daughter pair told all to ET.
"My mom has helped me so much," Madonna's poised teen daughter explained. "She has really great style. ... It's really fun to be able to see something being created and see the result."
"I'm very proud of her. I want all of my kids to be creative but whatever they end up doing is fine with me, as long as they love it," proud Mama Madonna said.
Also on hand for the big launch of the Material Girl collection was the line's "celebrity muse," "Gossip Girl" star Taylor Momsen, who told ET, "The clothes are amazing. Madonna and Lola were so awesome to work with and it's just been an amazing experience."
Watch the video to learn more abut the line, which includes apparel, footwear and accessories. You can also check out the Material Girl blog, which Lola contributes to, here.