London, Mar 22 : After a worldwide debate over her biceps, US First Lady Michelle Obama appears to be having a little trouble keeping a part of her body in shape - hips.

The 45-year-old, who is almost 5ft 11in tall, has candidly revealed that she has a thing for hamburgers and chips, and is concerned about her hips.

"I have hips," she told The New York Times, "and I have them covered up with these pleats." The 45-year-old first lady admitted that she was not naturally slim and, like countless other mothers her age, had to be careful with her exercise and diet while choosing her clothes carefully.

Like hubby, Mrs, Obama added, she followed an exercise routine. It includes lifting light weights, using a skipping rope and running.

"This is work," The Times quoted her, as telling the newspaper.

However, she added: "I could live on French fries. They are my favourite food in the whole world."(ANI)