Charlize Theron shared a rare image of her daughters Jackson, 10, and August, seven, as she celebrated her mother Gerda's birthday on Thursday. The 46-year-old Oscar-winning actress posted a slideshow of photos on her Instagram page to mark the occasion. 'Today is my moms birthday. I wanted to share her with all of you because anyone who knows her, knows how utterly awesome it’s is to stand in her sunlight,' Charlize gushed in the caption. The actress continued, 'She TRULY is life. She laughs louder than anyone I’ve ever met. 'She’s a great tennis player/golfer/hiker AND a gifted s*** talker!...