When Tiffany & Co. flies in its handbag-and-accessories duo, designers Richard Lambertson and John Truex, a crowd of adoring fans always pack the steel-encased NorthPark Center store to meet and greet. This time, Texas Ballet Theater and its patrons were treated to a private reception with the charming twosome as they debuted the latest from their Tiffany Leather Collection. As always, the designers were overwhelmingly lovable — helping the likes of TBT’s Jeanne Cassidy and guests Carol Riddick and Gina Betts try a luxurious new tote or Tiffany-blue evening bag on for size.