The newly wedded couple decided to stop by Dillard's Perimeter Mall where their fashionable family member was busy promoting the 'Jessica Simpson Collection', reported E!Online.
"#dillards love you @ashleesimpsonofficial," Simpson wrote while posing for a selfie with her sister.
"Love my make up @karanmitchellmua Atlanta get ready for the Simpson ladies," she added.
Once they arrived at their destination, the sisters showed off their ensembles from the Jessica Simpson collection.
Ashlee wore floral pants with a black blouse while Jessica donned animal-print heels and a sexy jumpsuit from the collection.