Can u solve this riddle for me?

Question

A woman walked into an office building, looked at the guard, and said her name was Jenny. The next day she walked into the same building, looked at the same guard and said her name was Julie. What is going on?

Answer 1

wtf?that just souds like she retarded

Answer 2

She's either bipolar or she changed her name in the 24 hour period between the time she introduced herself as Jenny and the next day when she introduced herself as Julie. Identity crisis could also be an explaination as well.

Answer 3

maybe she was telling the guard the names of the women who walked into the building before her.

lol i have NO idea.

Answer 4

Maybe she was hung over and forgot her name one of those days.

Answer 5

Identical twin.  

Answer 6

she forgot wht was her name

Answer 7

her full name is jenny julie janet

Answer 8

maybe they are twins  

Answer 9

legaly changed her name in 24 h

Answer 10

because it wasn't the same lady, in fact it was two identical twins, so it just seemed like it was the same lady when it was actually her twin named Julie

Answer 11

hmm..maybe she was an actress?

Answer 12

twins maybe.  

the people said it first so i guess i was too late.

Answer 13

...Multiple personality disorder?

Lol.

Answer 14

she is guessing the guards name

lol i have No idea

Answer 15

maybe she has a twin sister

Answer 16

are they twins?

Answer 17

beats me

Answer 18

shes reading there name tags and repeating there own names to them.