Rihanna celebrates her mother's birthday with throwback photo

Singer Rihanna took to Instagram to wish her mom, Monica Braithwaite, a happy birthday 54th birthday. 

 She shared a touching caption that detailed how her own pregnancy has "unlocked new levels of love and respect" for her mother. 

 The singer shared a photo of her as a toddler standing beside her mother and she wrote:

 "Today is my Queen’s birthday!!! "Being on the verge of motherhood, unlocked new levels of love and respect I have for my mommy in a way that I could never explain! 

 "She’s the true MVP and I wanna give her her flowers every second I can! Love you mumzzzz!!! Happy Birthday! We gon celebrate on da link up!"