Judges announced Miss Mundy (19), who is from St Brelade, as the 62nd holder of the title at the competition final held at the Jersey Arts Centre on Saturday evening.
Miss Mundy, who was the runner-up in the Miss St Brelade competition, was surprised and delighted to win the crown.
‘I didn’t expect to win at all. I didn’t even think I would get into the final five after seeing how amazing the other competitors were – they were incredible,’ she said.
‘When I heard my name called out it was the best feeling ever. It’s so good.
‘I had the most fantastic time. All the other girls were lovely and it was a difficult competition. I feel so honoured to have won and I can’t wait to start getting involved as much as possible.
‘I would like to thank the Battle chairman Tony Perkins, his team and also the wonderful judges.’
She added: ‘I’m really looking forward to Battle day. I’m so excited.’
Miss Mundy’s interests include photography, charity work and baking, and she describes herself as enthusiastic, creative, confident and reliable.
She will lead the Battle of Flowers parades on Thursday 13 and Friday 14 August, as well as attending functions both on and off the Island, representing Jersey and the Battle of Flowers as part of her 12-month reign.
Last year’s Miss Battle, Holly Perchard, gave a speech to the Arts Centre audience, watching the final before presenting the crown to her successor.
The judges for the competition were the Battle of Flowers vice-chairman, Mo Le Var, former Miss Battle, Victoria Trehorel, and Sandra Matthew, who has been involved with the event for many years.
The other 13 competitors in the final were Ebony Troy (17), Deborah Le Rendu (18), Anya Skinner(18), Lani Tappenden (18), Jodie Lee Tostevin (23), Charlotte Volante (20), Katie Labey (19), Nicolle Maltwood (19), Charlotte Eva (17), Leanne Reed (18), Kayleigh Larkin (26), Cara Malorey-Vibert (20) and Sylvie Wilson (17).
