(Cover) - EN Star Style - Denise Richards enlisted the help of her daughters when designing lipsticks for CARGO.

The 39-year-old actress and former model has two daughters with ex-husband Charlie Sheen; six-year-old Sam, and Lola, five.

Denise is thrilled about collaborating with Canadian cosmetics brand CARGO, and is especially pleased to have helped create two lipstick shades which will be sold in aid of St. Jude Children's Research Hospital.

The beautiful star received design tips from her stylish young daughters when choosing her shades, and has taken to social-networking site Twitter to express her excitement.

I designed two lipstick colours one for Sam and one for Lola for Cargo the girls helped me! Proceeds are donated to St Jude (sic)!! wrote Denise.

The star also shared her fashion fears on the site, as she had been busy trying to figure out what she could wear for an upcoming television appearance. The actress will be discussing beauty on an American TV show, so she wanted to make sure she looked fashion-forward on-screen.

Trying to find an outfit for tomorrow @lisarinna is filling in for Joy Behar on CNN I'll be on as a guest.. Talking beauty topics (sic)! explained Denise. (C) Cover Media