<P> In the anime, Chibiusa changes into her princess form when she needs more power than her Soldier or civilian forms allow, similar to how her parents can become Prince Endymion and Princess Serenity when they need more power . In this form, she wears a dress and jewelry identical to that of Princess Serenity, albeit smaller . This happens twice, during the final battles of the second and fourth series . Like her mother, Chibiusa grows a pair of functioning, angelic wings during the SuperS climax . She does this after Usagi, as Serenity, grabs her while they are falling, and the two of them collide with Pegasus . It is unknown if she grew the wings on her own or with Usagi's or Pegasus' help . The Chibiusa of the future, Small Lady, is also shown in her princess dress when she is not transformed, so this form is not exclusive to power - ups . </P> <P> In the anime, it is not told where she got the name from, but again it is only used by the royal family and friends . She mainly goes by Chibiusa, even to the point where in the 20th century she asks Setsuna to call her Chibiusa instead of Small Lady . </P> <P> In act 40 of the manga, it is stated that when she is old enough she will become Princess Lady Serenity . This form is shown in Artbooks IV and V and in Helios' dreams . In the end, when the enemy is defeated and Helios has departed on the back of the "real" Pegasus, Chibiusa thinks to herself that when she has grown up, he will become her "prince ." This older future form is never shown or mentioned in the anime, though an older Chibiusa is shown in episode 158 when she and Usagi switch ages . </P> <P> When she returns to the future with Sailor Moon, Chibiusa becomes Black Lady (ブラック ・ レディ, Burakku Redi) after she is captured outside of the Palace by Wiseman--an evil character in the Black Moon Arc . Wiseman discovers Chibiusa, who is feeling frustrated after a failed attempt to revive her mother, and distorts her memories of her family . Wiseman convinces her that her parents do not want her and no one loves her . </P>

When does chibiusa find out usagi is her mom