The girls of Fifth Harmony are set to take the stage at London's Wembley Stadium for the 2015 Capital FM Summertime Ball and member Ally Brooke Hernandez has been absolutely blown away by their rehearsal for the event. 

Writing on Twitter this afternoon (June 5), the beauty explained that she was amazed by the view from the stage and can't wait for the musical extravaganza tomorrow:

"Just got done with rehearsal at the Wembley Stadium for #CapitalSTB and my breath was taken away at the sight. TOMORROW!!! @CapitalOfficial. Can't believe it!"

Earlier this week, 5H's Camila Cabello told the radio station that she and the other girls will be putting everything into this upcoming performance: "I am going to actually pee myself. If anyone sees me there please give me a hug because I’ll probably be freaking out. We promise we’re going to go all out for you guys!”

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Watch Fifth Harmony's interview on 'Good Morning Britain' below: