Heidi Montag appears on NBC's 'Tonight Show With Jay Leno' to talk about her upcoming film 'Just Go With It'. Montag says she would make her breasts even larger but there is a limit, legally. * MONTAG WANTS TO MAKE A SPLASH WITH MERMAID MOVIE REMAKE Reality TV star HEIDI MONTAG is begging moviemaker RON HOWARD to remake mermaid movie SPLASH - because she wants to play DARYL HANNAH's role. The Hills star, who is about to make her big screen debut in Adam Sandler comedy Just Go With It, has always been a big fan of the 1984 film, which also featured a young Tom Hanks - and she thinks she'd be a perfect mermaid. Montag says,