What's all the buzz about? Jessica Simpson and her (very large) baby bump made quite a fashion statement when the Fashion Star mentor stepped out to a doctor's appointment on Friday, March 29, with fiance Eric Johnson and baby Maxwell in tow.

The twice-pregnant singer wore a long black-and-yellow striped maxi dress that accentuated her growing belly for the family outing, topped off with a pair of oversized sunglasses.

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Johnson, 33, similarly kept things casual in a dark hood and jeans and his own little accessory -- daughter Maxwell, 11 months, who sat happily atop daddy's shoulders.

The threesome have been spending plenty of quality time together prior to the birth of Simpson's second child, including a weekend trip to Charlotte, N.C., last weekend to promote Simpson's fashion line.

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"Jessica is in an amazing mood," a source told Us Weekly of the expectant mother. "Eric is very attentive, making sure that she feels fine."

Just yesterday, Simpson was spotted hitting the gym in Los Angeles in a black tank top and rolled-up sweatpants. The TV host has previously spoken out about how this second pregnancy is different from her first with Maxwell. 

PHOTOS: Jessica Simpson's baby bump

"I'm not really craving as much and I know how hard it is to get off so I'm trying to make healthier, wiser decisions," the Weight Watchers spokeswoman told Ellen DeGeneres earlier this month. But on the upside, her weight will never be an issue for Johnson, she said.

"I can gain as much weight and I will have a husband to be that loves me!" she added.

This article originally appeared on Usmagazine.com: Jessica Simpson Shows Off Big Baby Bump in Black-and-Yellow Striped Dress During Outing With Fiance Eric Johnson, Baby Maxwell