User blog comment:SoulRise99/Chapter 526: August is the REAL child of Zeref and Mavis; as well as the WEAKEST Mage in Alvarez!?/@comment-47.150.126.254-20170318200437/@comment-4933386-20170319103436

I am sure she can copy the celestial spirits she summons. Or if she use the Star dress, which she has to use magic herself. So yeah