The budding designer throws a bash at Macy's -- and talks personal style

By Kate Hogan
Updated September 29, 2011 02:30 PM

Courtesy Iconix

Most people don’t remember their first birthday party. But for Material Girl designer Lourdes Leon the occasion — her brand’s first birthday — was unforgettable.

“It feels so great,” she told PEOPLE recently during the bash at Macy’s in New York. “I never thought it would get this big and it makes me really proud, and my mom is really proud, too.”

Mom Madonna has said she lets Leon do “most of the work,” but the brand’s face, Kelly Osbourne, says the superstar singer contributes, too. “[Leon] and Madonna do everything and that really reflects in the styles you see coming down the catwalk … it makes me really proud as well, because the line just keeps getting better and better,” she told PEOPLE.

The collaboration between the Osbournes and Madonna’s family is stylishly in sync; in fact, the material girls said they find inspiration in each other. “Definitely Kelly, and my mom definitely inspires me,” Lourdes said when asked about her style icons. “She’s just crazy when it comes to her fashion sense.” Osbourne echoes that sentiment. “I actually learned a lot from my mother and growing up watching Madonna.”

And these days, Madonna doesn’t just influence her daughter — she shares her clothes. Or tries to. “My mom doesn’t fit into my shoes, so sucks for her,” Leon joked. “She’s like, ‘Oh damn, this doesn’t fit on my feet.’ I’m like, ‘Oh really? That’s too bad!'”

But she is happy to take advice from her mother, especially when it comes to personal style. “We sort of balance each other out. I feel like I could work on it, and she does the same for me,” Leon said. “We both give each other fashion tips.”

–Reporting by Carlos Greer