Yolanda Hadid has thanked her daughter Gigi for making her an 'Oma.'The former model, 56, shared a tender photo of herself holding hands with her infant granddaughter, whose tiny fingers tenderly clutched her own.'My heart is expending with so much love and joy for this little baby girl she is an angel sent to us from above.....' Yolanda gushed in the caption.'Thank you Mommy & Daddy for making me a Oma, I love every minute of it,' Yolanda said, using the German word for 'grandma.' 'She is an..