Jessica Simpson `beyond happy` about her pregnancy

Los Angeles: Singer-designer Jessica Simpson, who gave birth to her first child in May, is thrilled to have another baby on the way.

The 32-year-old `Fashion Star` host, who is engaged to Eric Johnson, is already expecting another brother or sister for Maxwell Drew, reported OK magazine.

"Jessica wasn`t planning the pregnancy but she`s beyond happy about it. She adores being a mother and she`s always wanted to have a big family so she feels totally blessed to have another baby on the way," a source said.

After piling on the pounds when she was pregnant with Maxwell, Simpson is determined to be healthier this time.

"Last time she used her pregnancy as a free pass to eat as much junk food as she wanted. When she was pregnant with Maxwell, a typical dinner would be fried chicken, mashed potatoes and ice cream.

"But she`s going to be making smart choices this time. She`s eating grilled chicken, steamed vegetables and low fat frozen yoghurt. Her goal this time is 50 lbs or less," the source added.