Claressa Shields turned 31 today (March 17), and she's reminding fans that "age is just a number." While riding around with Papoose, the boxing champ explained what reaching that age means to her. Meanwhile, Pap posted a short and sweet birthday message for his "queen" during their late-night outing.RELATED: Friends & Lovers! Claressa Shields Shares Sweet Message For Papoose As He Celebrates His 48th Birthday (PHOTOS)Claressa Shields Celebrates Turning 31Shields was all smiles as she addressed her 30s era on her birthday! She took to her Instagram Stories shortly after midnight on March 17 to...