Pregnant Beyonce & Jay Z celebrate at Solange's post-Grammy party(Photos)

 Beyonce and Jay Z danced the night away at her sister, Solange's post-grammy bash.The sisters sure had a lot to celebrate as Solange won her first Grammy and Beyonce won two for Best Urban Contemporary Album, Lemonade, and Best Music Video, Formation.
Kelly Rwoland and Michelle Williams were also in attendance.