Robin Roberts had an incredible weekend reminiscing about her childhood with the help of her older sister Sally Ann Roberts.MORE: Robin Roberts jokes about negative living situation - and her co-stars reactThe Good Morning America star took to Instagram to share a bittersweet discovery, whereby her sister had discovered some special albums from their upbringing to play on their parents' old stereo.Sharing a photo of the sentimental record player and Mahalia Jackson records on Instagram, Robin