'17 Again' opens at number one in Aus

Zac Efron has scored a box office number one in Australia with body-swap comedy 17 Again.

The movie's $3.1 million opening narrowly beats Monsters Vs. Aliens's $2.8 million haul to take the Easter weekend crown.

New releases The Boat That Rocked, Race To Witch Mountain and Dragonball Evolution all enter the chart, landing at number three, four and six respectively.

Elsewhere, last week's runner-up Knowing slips to number five while rom-com Confessions Of A Shopaholic suffers a sharp drop in ticket sales, sliding six places to number nine.

The box office top ten in full (figures in Australian dollars):

1. (-) 17 Again - $3,138,224
2. (1) Monsters Vs. Aliens - $2,870,038
3. (-) The Boat That Rocked - $1,385,171
4. (-) Race To Witch Mountain - $1,278,113
5. (2) Knowing - $928,557
6. (-) Dragonball Evolution - $923,557
7. (4) The Pink Panther 2 - $436,366
8. (6) Duplicity - $363,201
9. (3) Confessions Of A Shopaholic - $313,075
10. (5) Paul Blart: Mall Cop - $302,536