Synopsis:
In her first American interview, Carla Bruni-Sarkozy speaks candidly to Barbara Walters about how she reconciles life as First Lady of France with a successful career as a recording artist, the provocative lyrics in her new album, "Comme si de rien n'tait" ("As If Nothing Happened"), which is No. 1 in France, and her surprising whirlwind romance and marriage to the President of France, Nicolas Sarkozy. Then, Dr. Jim Levine reports on a six month Mayo Clinic study to see if getting people up on their feet and moving could help workers lose weight. Next, the marketers of diet aid "Sensa" say it's a scientific breakthrough, but "20/20" interviews experts who say this breakthrough has yet to be proven. Finally, The Jonas Brothers give viewers an all-access pass with an intimate look inside their tour bus and their daily life on the road as they promote their new CD, "A Little Bit Longer."