Jessica Simpson debuts new baby bump

She only just showed off her weight loss and now Jessica Simpson is proudly sharing her weight gain.

The singer posted a pic of her growing baby bump on her Twitter account Sunday. Wearing a bikini and a floral cover-up, Simpson lets it all hang out in her self-portrait.

"Bumpin' and Proud!" the caption on the picture says.

According to People magazine, the latest shot is just one of many Simpson has shared during her Hawaiian family vacation with several family members including fiancé Eric Johnson, their seven-month-old daughter Maxwell and Simpson's sister Ashley.