Olivia Dunne, a gymnast at LSU, made a comment about her sister Julz Dunne's pink gym outfit on Twitter.
Julz Dunne responded with a witty comeback, saying that she was glad Olivia was paying attention to her fashion choices.
The exchange between the sisters went viral on social media, with many people praising Julz for her response.
Olivia later clarified that her comment was meant to be a joke and that she loves her sister's style.
The Dunne sisters are both accomplished gymnasts, with Olivia being a member of the US national team.
Their playful banter on Twitter shows the close bond they share as sisters and athletes.