Beyoncé and Solange Knowles’s sisterly bond has been going strong for decades. The singer took to Instagram on Wednesday to wish Solange a happy 29th birthday by sharing a sweet snapshot of the pair from their childhood. In the photo, the two flash huge smiles for the camera while sitting in what appears to be a small carnival ride. “Happy Birthday to my sis! I love you deep,” Beyoncé captioned the picture. She also shared a tender moment between Solange and Blue Ivy from Solange’s wedding day.