Over the weekend, I asked my best friend if she considered a backyard wedding. Already, the backyard wedding is a celebrity trend. Just ask Tori Spelling who wed Charlie Shanian in 2004 at the Beverly Hills estate of her father, TV producer Aaron Spelling… but then again most of us dont have a spare 56,000-foot garden. On a more relatable level, Elton John and David Furnish celebrated their 2005 wedding at John’s Windsor Estate, where guests socialised on two giant tents in his backyard. Liz Taylor married Larry Fortensky in …