Los Angeles, Actress Charlize Theron says her children share a beautiful bond as siblings. The 40-year-old loves watching the interaction between her son Jackson and adopted daughter August, reports people.com. “I was an only child, and to watch that sibling relationship I feel like I'm watching something so sacred and beautiful. Like, he walks into a room and he doesn't even look at her and she just lights up and I'm, like, in front of her going crazy trying to get a reaction... It's so beautiful,” Theron said on TV show “Extra”. Theron, who adopted August as an infant last year, can't believe how quickly she is growing up. “She's great, she's growing like a weed. It's, like, insane - it's unbelievable how quickly they become little people. I'm trying to hang on to my little baby, but she's just fighting right through that like, 'I'm ready to go'," she said.