They are both 19-years-old.
Mahoni is competing as Miss Malo E Lelei Travel while Lotu Sika is Miss Ha’apai Masani at the biggest pageant in Tonga.
A total of 12 contestants will be vying for this year’s crown.
The contestants will be taking part in an orientation and photo-shoot that will be held tomorrow morning at the Tanoa International Hotel.
The first judging event will be a pre-pageant interview on Monday 3 July, at the Fa’onelua Convention Center.