Britney Spears' Nicki Minaj Withdrawal Symptoms

Britney is seriously missing her 'Femme Fatale' BFF Nicki.

With the US leg of Britney Spears' 'Femme Fatale' tour complete, Brit is getting Nicki Minaj withdrawal symptoms.

The 'Super Bass' singer was supporting Britney, along with Jersey Shore's DJ Pauly D and Britney is missing them both.

"Nicki Minaj - You're already missed big time," the 'Till The World Ends' singer posted on Facebook.

"Now I have to call DJ Pauly D to hear my favorite song every night ;) -Brit."

With it Britney added a photo of her and Nicki backstage during the tour, which is headed for the UK later this year.