Kate Moss Sadie Frost black white

Opposites attract. Kate Moss (left) and Sadie Frost (right) go for a yin and yang effect. Photo: Splash News

How did two of Britain's sexiest moms celebrate Father's Day? Together!

Supermodel Kate Moss and actress/Frost French designer Sadie Frost were spotted on the streets of London looking casually chic in contrasting ensembles.

Blonde Moss sported a summery white blazer, tee, and cropped pants, while brunette Frost looked like her negative in a black sweater, shirt, and skinny pants.

Even their sunglasses were opposites: Moss wore black shades while Frost's frames were white!

According to the Daily Mail, the women were on their way to see Dazed and Confused publisher Jefferson Hack, the father of Moss's equally stylish 7-year-old, Lila, who accompanied her mom on the outing.

Besides a brown belt and bag, Moss, 36, also accessorized her outfit with a giant white envelope, which the newspaper speculates was a greeting card in honor of Hack's 39th birthday.

Joining Frost, 45, on the girls' day out was 9-year-old Iris, her daughter with ex-husband Jude Law.

Though Frost appeared to be in good spirits on Sunday, she was pretty furious just days earlier, when she reportedly had a row with Law's girlfriend Sienna Miller for taking the girl to a salon to have her hair bobbed.

Frost allegedly tweeted, "I think ya should get ya own child and then cut their hair," before her Twitter account was later deleted.

Somehow we're pretty sure that Frost and Moss didn't make a pit stop by Law's house on Father's Day.

In related news, read about Moss's recent night on the town with two-tone hair.