Lisa Marie Presley's life "revolves around her children".

The songwriter and daughter of legendary musician Elvis Presley is dedicated to motherhood.

Lisa is mom to 22-year-old Riley Keough, 19-year-old Benjamin and three-year-old twin girls Harper and Finley.

The star is in awe of how fast her tots are growing up.

"Our life revolves around them and they dictate us and everyone around us. It's kind of about them and they're doing really well," Lisa told People magazine. "I don't want to put them in school just yet I want to keep them to myself as long as possible!"

Lisa recently visited a museum exhibit dedicated to her life at her father's iconic residence Graceland in Tennessee. Seeing items and photographs from her past flooded Lisa with nostalgia.

"I walked in with my twins, looked around, and I gasped. I couldn't tell if I was going to laugh or cry," she recalled. "It was like that show This Is Your Life. I walked in and there was my tiny little first record player, my first faux fur coat, the key to the golf cart my father had given me for my birthday that I probably hadn't seen in 35 years."

The Graceland exhibit called Elvis... Through His Daughter's Eyes was unveiled on Lisa's birthday on Wednesday and will be open to the public for two years.