It starts to change color

Suddenly, parts of the goo start to change color as the body gets more defined. Changing from bright pink to a light tan. The goo's body was slowly shifting to a mirror of Jennifer's, with an ample chest, a round ass, and a wasp waist. The goo also formed what appeared to be hair which changed color to a golden blonde which fell down its back. As the goo loomed closer to Jennifer, its face started to morph as well.

Soon, pink eyes and nude skin were all that distinguished the two. However one of those things changed when Jennifer finally looked up, providing a full view of her eyes which were quickly copied.

Jennifer opened her mouth to scream but her slime counterpart quickly reacted, throwing out its arm which transformed back into the pink goo as it filled Jennifer's mouth.