Pregnancy may not be agreeing with Nicole Richie’s hair. Celebrity snitch Mike Walker claims the pint-sized mom-to-be was spied stocking up on Rogaine For Women.

Mike says:

“Pregnant headed-to-jail-bird Nicole Richie spotted [sic] at a Santa Monica drugstore looking pasty/skeletal, which explains those vitamin bottles stacked high in her shopping cart – but what really raised scoop-snoopers’ eyebrows were half a dozen boxes of Women’s Rogaine hair regrowth treatments. Said My Spywitness: “Nicole’s hair was looking thin and stringy.”