Bo Derek at Russell Senate Office Building on Wednesday. (Aaron Leitko/The Washington Post)

Event: A press conference in support of the American Horse Slaughter Prevention Act

Venue: Russell Senate Office Building

Bona Fides: 1980s movie-star pinup (“10”), longtime equestrian activist. Author of “Riding Lessons: Everything That Matters in Life, I Learned from Horses.”

Backup: Sen. Mary Landrieu (D-La.), Rep. Dan Burton (R-Ind.), former “Bachelor” star Lorenzo Borghese, Willie Nelson’s daughter Amy and granddaughter Raelyn.

What she wants: To stop the U.S. meat industry from slaughtering horses for human food (most of it shipped overseas).

How she looked: Horse-lady casual in black jacket and riding pants; now letting her hair go a little gray.

How she sounded: Fed up! She’s been lobbying unsuccessfulyl for this same bill for years. “How often do 80% of Americans agree on anything? And this hasn’t passed?” she told our colleague, Aaron Leitko. “It’s been a real education in politics and corruption in politics for me.”