Britney getting chubby

Britney Spears, Pink, and Janet Jackson have triumphed over their yo-yoing weight problems thanks to personal trainer Tony Martinez. Tony helped rock star and mom of two Pink get back into shape by using a skateboard in her workouts. And he helped year-old Britney regain her youthful toned look ahead of her hugely successful residency at the Planet Hollywood in Las Vegas. Scroll down for video. Getting it back: Tony Martinez helped Britney Spears get in shape for her hugely successful residency in Las Vegas, pictured on left at the Billboard Music Awards in May and on right performing in London in Before that the 47 year old LA native helped Janet Jackson stun millions with her controversial 'Nipplegate' half-time performance at the Super Bowl alongside Justin Timberlake.

As soon as he turned around, she climbed right back up again, stomping like a defiant show pony. Her eyes were still wide; her mouth was still agape. Only Cher, who will arrive in August fresh off the phenomenal camp success of Mamma Mia! Here We Go Again, seems an apt comparison. But there was a time when it seemed unlikely that she would ever tour again, or record new music, or flash a sincere smile in public.

Jessica Simpson was the least famous third of a trifecta whose bodies I grew up gazing at alongside an American public that was absolutely rabid for opportunities to scrutinize them. These women came into public life as girls, barely out of puberty and eager to please a public that demanded they be pleasant or face extreme consequences. She just is sexy.

Some artists know how to get exactly what they want. And some know how to give their fans precisely what they want, but only a few know how to do both at the same time. That's why Britney Spears drags a chubby guy into the bathroom of a supersonic jet in Best Video of the Year nominee "Toxic," only to tear off his mask and reveal a hunky blond stud.