Solange Posts Photos of Beyoncé on Instagram, Possibly Throws Shade

The Knowles sisters' social media activity continues to captivate and mystify a nation of lookie loos. The latest? After purging her Instagram account, Solange has posted some old photos of Beyoncé for Throwback Thursday, acknowledging in the caption that at least one of them "will be deleted tomorrow."

Solange posted one photo of Beyoncé and herself as little girls around Christmas time.

Another photo, of Solange and Beyoncé looking on as Sisqo plays guitar, had the caption:

#tt The sock [donut]. Best thing since sliced [bread]. (This will be deleted tomorrow, and it's not because I don't love sisqo's awesome guitar)

Hmmm…