Aly Raisman and Simone Biles have been very busy over the last few days. Along with rehearsing for the Kellogg's Tour of Champions, they have been making appearances at big-time events -- yesterday, they went backstage at the Sherri Hill Show for New York Fashion Week and looked stunning as ever.

Go behind the scenes with social media posts from before, during, and after the event:

So excited @Simone_Biles is here! #NYFW @SherriHill pic.twitter.com/LhgSsK7z8f

— SHERRI HILL (@SherriHill) September 12, 2016

.@Simone_Biles, @Aly_Raisman and CNN's @Chloe_Melas are a perfect backstage at the @SherriHill show for #NYFW! pic.twitter.com/CQMq77ZO5f

— CNN Entertainment (@CNNent) September 12, 2016

We love these girls! #NYFW @Simone_Biles @Aly_Raisman @SherriHill pic.twitter.com/evKQNljVjJ

— SHERRI HILL (@SherriHill) September 12, 2016

Are they not the cutest! #sherrihill #NYFW @Simone_Biles @Aly_Raisman pic.twitter.com/wUpOYeu7Hu

— SHERRI HILL (@SherriHill) September 12, 2016

when your baby sis just walked in the @SherriHill show at NYFW and is on @Simone_Biles snapchat... DYING OMG pic.twitter.com/c4dPunb8Nr

— Jayde Ferraro (@jaydeferraro) September 12, 2016

Our mini beauties with these beauties. #NYFW @Simone_Biles @Aly_Raisman @SherriHill pic.twitter.com/NuvSefL9B2

— SHERRI HILL (@SherriHill) September 13, 2016

Jordyn Jones and @Simone_Biles #NYFW @SherriHill #Fashion show #Sherrihill #NYC pic.twitter.com/xqrteiAcCi

— Jordyn Online (@JordynOnline) September 12, 2016

A couple days ago, Biles and Raisman joined Olivia Munn as guest performers on Lip Sync Battle. Watch the video below:

They didn't beat Michael Phelps, who performed "Lose Yourself" and won, but they definitely had a blast, nonetheless.