If you are planning to have a shower with neutral colors you should go with shades of green, yellow, or brown. All of these colors are suitable for a shower when you don't know if it's a boy or girl.
A shower for a baby boy and a shower for a baby girl are both termed a "baby shower". There are different party themes that you can do for a girl baby shower. For example, you could throw a princess baby shower, a pink baby shower, a cupcake baby shower, a flower baby shower, a ladybug baby shower, and many other themes. See related link below for more inspiration.
You can find baby shower ideas for girls at the following sites. Here are the sites I found for you to look at pinterest.com/kaje_ryon/it-is-a-girl-baby-shower-ideas/ ,pinterest.com/simly/girl-baby-shower-ideas/
By the color of the ribbon in the baby's hair or, if the baby has no hair, by the color of the clothing or blanket. If the baby is a boy, the color will be blue; if the baby is a girl, the color will be pink.
A centerpiece with a picture of a Baby boy on it or a Baby girl is a really good idea for a baby shower centerpieces. Also a picture of a diaper and a binkie might be good.
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Some of the most popular baby shower favors depending if it is a girl or boy is pink or blue, baby bottles and rattles, bears, baby shower cakes. Just don't forget to get for a boy or girl depending on what the person is having
Some cheap baby shower party favors would be bubblegum cigars, streamers, pacifiers and its a boy/its a girl confetti.
A big shower--no. A small shower, yes...she still needs boy stuff!
A zebra theme is a fun party theme for a baby shower. You can always accent with pink. Be sure to get plates, cups, and decorations.
M&Ms offer candies with names and other things printed on the candy which could be served at a baby shower. Also baby food jars filled with small candies or mints, baby shower bingo, and pacifier pins are good ideas.
By itself, no. It would be correct to ask, "Does she have a baby girl?" Otherwise, you'd either use present-tense, "She has a baby girl," or past-tense, "She had a baby girl"
Certainly you can have a baby shower for your daughter-in-law even though she has a little girl when she married your son. This is your son's child too and if they have a second or third child you can have as many baby showers as you like and it's quite acceptable.