Katharine McPhee @ The Pink Party 2007

American Idol runner-up Katharine McPhee (sans beau Nick Cokas) accents her little brown dress with HUGE purple clutch at the The Pink Party on Saturday in Santa Monica, Calif.

The event was thrown to benefit the Cedar-Sinai Women’s Cancer Research Institute at Viceroy Santa Monica.

Kat, 23, has been busy sporting a baby bump for her new film I Know What Boys Like with Anna Faris and Rumer Willis.

Check out 10+ more pictures inside if you wanna catch the McPheever…