Mama's got some major cleavage!

Jessica Simpson shared a very revealing photo of herself over the weekend -- a picture that put her chest front and center.

"Just taking a walk around the block... Street legal???" she wrote below the pic, which shows her making a surprised face while pushing baby Maxwell's stroller in a very low cut black shirt.

It's one of the few shots Jessica has shared with fans since giving birth last month, as the singer has kept a relatively low profile while she works on dropping the baby weight.

Of course, this isn't the first time Jessica has brought out the girls -- check out her most revealing looks in the gallery above!

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