Corrected entry: When Tom and Wendy go up to Tom's room, Wendy forces him onto the bed, takes her top and bra off and chucks them both away. When Tom tells Wendy he is on his honeymoon, she gets angry and goes to pick up her top and bra. You can see her grab her top and you can also see her red bra being picked up. But later when Sarah comes in after kissing Peter, she FINDS the red bra, which was picked up by Wendy.
Corrected entry: At the beginning of the movie, when Tom is playing football on the beach with his friends (before the two meet), it shows Sarah walking with her dog in a pink sweater. Then it cuts to a different angle and shows her in the background without the dog and in a darker sweater. Then, when the football is about to hit her, she has the dog and first sweater back.