Something borrowed, something boob. A mother-of-the-groom was slammed online after reportedly attending her son’s wedding in a very revealing black mini dress, complete with a floor-length overskirt. A recent — and anonymous — bride posted a photo of the alleged display on Reddit under the “Wedding Shaming” forum. The photo — which leaves all three parties faceless — shows the bride standing next to her scantily clad, cleavage-baring mother-in-law alongside her new husband. Since being posted to the forum — which contains 503,000 users — it has racked up nearly 400 comments, many trashing or poking fun at the insensitive relative for her skimpy dress. “I think the MIL has a phenomenal body but this is not appropriate wear for her son’s wedding,” chimed in one user. “She looks like she’s going to prom.” “It’s black though, like she’s going to a sexy funeral,” another noted.