Robert Pattinson's not the only member of the family with some serious talent!

The Twilight alum's big sister Lizzy Pattinson showed off her vocal abilities during her auction for X Factor U.K., singing a soulful rendition of Bonnie Raitt's "Feels Like Home."

Lizzy, a personal assistant, reportedly passed a closed-door auction for The X Factor U.K. in late July, but her on-camera audition only aired this week. In the clip, the 31-year-old blond beauty sings her heart out for judges Simon Cowell, Louis Walsh, Cheryl Cole and Mel B—giving it her all to make it on to the next round!

Lizzy Pattinson, Robert Pattinson

Getty Images

At this point, it's unclear how far 31-year-old Lizzy will go in the competition. One thing's for sure, though: Her 28-year-old baby bro will always be her No. 1 fan!

"I'm like, so ridiculously proud of her," Rob gushed to Grazia Daily in an on-camera interview earlier this month. "I would never have the balls to do that, ever, in a million years. I can't believe she's done it. So, it's amazing."

A source told the Mirror last month that Rob and Lizzy are, indeed, "incredibly close," adding, "He has always been enormously supportive of Lizzy and her career. They have even sung together."

But it's important to Lizzy that she rises to fame on her own talent—without the help of Rob's fame. "She didn't mention she was related to him to any judges or producers," a source told the British tabloid. "It's important to her she does not fall into the trap of just becoming 'Rob's sister.'"

Lizzy's not exactly a newcomer to the music scene, though. Along with her two bandmates, she's played gigs in London and Majorca. She also contributed background vocals to the Twilight and Twilight: Breaking Dawn—Part 1 soundtrack.

Maybe Rob will return the favor someday and sing background vocals for her next big project!

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