A cestui que trust is a formal Latin term referring to a beneficiary having an equitable interest in a trust, with the legal title being vested to the trustee. The law looks with suspicion upon transactions between trustees and beneficiaries, and, when the cestui que trust sells trust property to the trustee, the burden is placed upon the grantee or trustee to whom such transfer is made to show that the grantor or cestue que trust was in possession of full information and acted upon her own volition or independent advice, and free from all influence of the grantee or trustee to whom such transfer is made.