Gigi, 22, confirmed her involvement in an Instagram post Monday after Bella, 20, announced her own return over the weekend.
"Forever and ever and ever a dream to be asked back to the VS Show!!!" Gigi captioned a gif of her 2016 fitting.
"Thank you my friends @ed_razek @10magazine @johndavidpfeiffer @monica.nitro for another unforgettable opportunity; every aspect makes me feel like a dreaming kid again (as shown here at last year's fitting, by @jeromeduran)! @victoriassecret #VSFS2017," she added.
Gigi walked in her first Victoria's Secret Fashion Show in 2015, with Bella making her debut in 2016.
Bella said in an Instagram post Saturday that she was "crazy humbled" for the opportunity to come back this year.
"@victoriassecret I am so excited!" the model gushed. "Thank you @monica.mitro @10magazine @johndavidpfeiffer and of course the wonderful, incredible @ed_razek + everyone on the team for making this dream come true again."
"I feel so crazy humbled to get the opportunity to be a part of this show again," she added. "Walking into the offices this year i felt so happy, healthy, and honored.. I can't wait for another incredible experience!!! Congrats to all of the beautiful ladies I will be walking beside. I can't wait!"
Gigi and Bella will walk alongside the 14 official Victoria's Secret Angels and 18 newcomers, including French model Estelle Chen and Australian model Victoria Lee.
Victoria's Secret has yet to announce a date and location for this year's show.
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