joins fiance Hayden Christensen
watch the men's semifinals at the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on Sunday (September 13) in the Flushing, Queen, New York City.
The 28-year-old actress blocked the sunlight with a hand fan that read, "I'm Your Biggest Fan."
Earlier in the day, Rachel
sat front row next to Nicky Hilton
's Shenae Grimes