HollyWed: Inside Celebrity Marriages Part 1: Stars in marital crisis are the focus of infinite fascination. Britney's 55-Hour Marriage: Ex Talks Part 2: Britney Spears' first ex-husband remembers their brief '04 coupling. Endless Love Part 3: Inside Gene Simmon's and Donny Osmond's successful marriages. Celebrity Wedding Freebies Part 4: Many celebrities manage to get deep discounts on their big days. I'm With Her Part 5: "Biggest Loser" host Alison Sweeney married a Calif. highway patrolman. Hanson: I Married a Fan Part 6: The Hanson brothers all met their future wives at concerts. The Hardest Part of Marrying a Hanson The pop trio and their wives discuss the challenges of married life. How Celebs Keep Their Weddings Secret Star wedding planner Sharon Sacks: How celebs pull off big day in private way. 'HollyWed': Inside Celebrity Marriages Watch "20/20" Friday at 10 p.m.