Tinie Tempah turned into a wedding crasher as he happily posed with a bride and groom on a beach in Cornwall on Sunday. The rapper, 37, had earlier that day performed to 50,000 at the Boardmasters festival in Newquay, however, he soon found himself to be the unexpected guest of honour at Jenny and Dave Boorman's nuptials. Following dinner at Tom Sellers' restaurant in Carbis Bay, Tinie had spotted the newlyweds from Leicester celebrating with their loved ones on the beach and came over to personally congratulate the couple. The trio then posed for a number of snaps together, with the couple looking delighted to meet the Pass Out…