Gwen Stefani has us going gaga in the pages of April's Elle UK.

The L.A.M.B. fashionista rocked the runway just a few weeks ago at New York Fashion Week, and now the hot mama of two is showing off her incredibly toned 41-year-old body.

During her interview with Elle UK, Ms. Stefani admits it's "a daily struggle" to keep her body looking this good. Gwen says:

    "I work out five days a week, I can’t imagine not doing it. I’d like to have no rules and eat what I want, but I’ve learned over the years that I’m so disappointed when I can’t wear the clothes I want to wear. And if I let myself down, appear on stage when I’m not looking my best, it’s not fun for me. I just beat myself up about it."

We can't get enough of those signature red lips. When asked about her makeup routine, Gavin Rossdale's wifey adds:

    "I wear make-up every single day; I like to wear make-up for Gavin and I don’t feel energized till I’ve put it on, then I’m ready to go."

As for her shampoo of choice, the multi-millionaire admits to loving Pantene. Gwen also reveals her Dior wedding dress created by John Galliano is heading to a museum. She tells the mag, "It’s going into the V&A now. I didn’t wanna send it because I was scared it would get ruined. But it’s a work of art, it needed to be seen."

Find out which performer, and Stefani friend, conducted the Elle interview ... after the jump.