Sofia Richie let it all hang out and then she let it all hang out again!

Wearing a very loose and very low-plunging dress, Justin Bieber's castoff, Sofia Richie, sought solace after the split with a bit of shopping on Tuesday -- and did it sans bra.

The teenager hit up her retail therapy at Maxfield in West Hollywood wearing a too-loose maxi dress and sandals.

Clearly overwhelmed by life and her voluminous dress, Sofia tripped over it and gave the world some boob. But that wasn't the only time! She showed off those nips getting into the car and basically just walking. The personality (who is famous because her dad is famous and because Bieber banged her) definitely wanted those perky puppies to come out and play! And that's just what they did!

Click through our gallery to see the NSFW photos!

Meanwhile, the Biebs, who dumped Sofia a few days ago, was showing off himself. The "Sorry" singer didn't look sorry at all when he flashed his abs during his performance in Paris during his "Purpose" World Tour at Hotel Accor Arena.

BTW: in case you didn't know, we're team Bieber all the way.