Blue Ivy has a supportive little sister.

When Beyoncé and Jay-Z’s 11-year-old daughter took the stage on Friday night for a surprise performance during her mom’s “Renaissance” tour, her younger sibling Rumi cheered her on.

In a Twitter video posted by a Paris concertgoer Saturday, the 5-year-old held a “We Love You Blue!” sign while sitting with friends and family.

The social media upload also included adorable footage of the little one dancing from her seat.

While Rumi’s twin brother, Sir, did not appear in the footage, Blue could be seen later joining her sister’s luxury box after busting out tough choreography with Beyoncé’s backup dancers.

The Grammy winner, 41, proudly introduced her preteen during “MY POWER,” saying, “Give it up for Blue.”

Blue, who matched Queen B in a sparkly silver top, metallic pants and a pair of sunglasses, looked effortless performing in front of the massive Stade de France crowd.

However, fans have been calling Beyoncé out via Twitter for her restrained dance moves since her “Renaissance” tour kicked off on May 10, with many speculating that she is recovering from foot surgery.

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“There is something DEFINITELY wrong with Beyoncé’s foot. She isn’t moving or dancing as much as she usually does,” one social media user wrote earlier this month. “She still performing her ass off though.”

Another added, “You can tell her she’s being extra careful with her foot (probably doc orders).”

Beyoncé has yet to respond to rumors of an injury.

The ongoing tour marks the songwriter’s first since 2016. After “Formation” wrapped, Beyoncé waited five years before performing again in Dubai in January.

Blue joined her mom on stage for that gig as well, dancing during “Brown Skin Girl,” which she helped write.