The dancing duo also had many people seeing double.

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“If y’all aren’t nice to us we will do this 100% with the real ending,” said Tizzi Chapin (@tizzichapin).

The stepdaughter and her stepmom who are only seven years apart seemed to bond over fist and chest bumping.

The two blondes lifted their legs and shook their booties.

“Darlin’ darlin’ twerk with me,” were the lyrics that could be heard in the background.

“Don’t make us go full out,” she said.

Her fans were definitely seeing double.

“Is it only me or do they look like twins?” asked one follower.

“They look the exact same though,” another agreed.

“Omg so pretty,” said one impressed viewer.

“Hold up, wait a minute, something ain’t right,” yet another watcher expressed concern.

“When they say your stepmom looks like your twin,” she said in a second video.

The 22-year-old and her 29-year-old stepmom seemed to agree as they compared their wavy light-haired locks.

Wearing leggings and sweatshirts, the duo held up their fists and continued to get down.

Not everyone was sure what to think about the situation.

“I thought the stepmom was on the right – and kind of weird her dad is dating someone identical to his daughter what?” said the follower.

Still, nothing would stop these best friends who were also family.

“Happy birthday bestie for life,” said Tizzi in a third video.

The pair could be seen dancing and taking their twerking to a new level at concerts, on hotel balconies, and in their front yard.

Dancing on tables and holding each other’s legs in the air to twerk better was also not off-limits for this dancing duo.

“Love this! Happy birthday!” said an enthused follower.

According to the National Institute of Health, 20% of households have at least one stepparent.

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