I am expecting a baby girl and need help choosing a middle name. I really like the name Gia but I am having a hard time finding a middle name that flows with it. Her dad’s middle name is Jaylen so I was thinking about Gia Jaelyn but not sure if the G/J letter sound is too much. Jordyn was also our second choice for baby girl names and I was thinking to use that but I’m not sure how I feel about Gia Jordyn. What l do you think? Her last name is also 2 syllables and starts with the letter D, if that helps. Any suggestions?
I think [name_f]Gia[/name_f] [name_f]Jalynn[/name_f] is beautiful. Other Suggestions:
[name_f]Gia[/name_f] [name_u]Camille[/name_u]
[name_f]Gia[/name_f] [name_f]Danielle[/name_f]
[name_f]Gia[/name_f] [name_f]Frances[/name_f]
[name_f]Gia[/name_f] [name_f]Grace[/name_f]
[name_f]Gia[/name_f] [name_u]James[/name_u]
[name_f]Gia[/name_f] [name_u]Lou[/name_u]
[name_f]Gia[/name_f] [name_f]Monique[/name_f]
[name_f]Gia[/name_f] [name_f]Paige[/name_f]
[name_f]Gia[/name_f] [name_u]Vaughn[/name_u]
I’m not a huge fan of the G/J combo myself but that’s just me.
It depends heavily on what you want.
Since [name_f]Gia[/name_f] is short do you want a longer and more elegant name to pair with it? Like
[name_f]Gia[/name_f] [name_f]Carlotta[/name_f]
[name_f]Gia[/name_f] [name_f]Ophelia[/name_f]
[name_f]Gia[/name_f] [name_f]Evangeline[/name_f]
[name_f]Gia[/name_f] [name_f]Penelope[/name_f]
[name_f]Gia[/name_f] [name_f]Scarlett[/name_f]
[name_f]Gia[/name_f] [name_f]Antoinette[/name_f]
[name_f]Gia[/name_f] [name_f]Mirabelle[/name_f]
If not, then I think [name_u]Jordyn[/name_u] goes better than [name_u]Jaelyn[/name_u].
Other suggestions:
[name_f]Gia[/name_f] [name_f]Elaine[/name_f]
[name_f]Gia[/name_f] [name_u]Quincy[/name_u]
[name_f]Gia[/name_f] [name_f]Lorelai[/name_f]
[name_f]Gia[/name_f] [name_f]Helene[/name_f]
[name_f]Gia[/name_f] [name_f]Paige[/name_f]
[name_f]Gia[/name_f] [name_u]Vivian[/name_u]
[name_f]Gia[/name_f] [name_f]Celine[/name_f]
Hopefully these help! The G/J thing really comes down to a personal taste IMO.
I’m not as keen on the G/J combo, at least not immediately, but I would Jordyn of the two as I think it sounds better, or possibly Jalyn as suggested above - but not Jaelyn with Gia. So not JAY-lin but Ja-LINN. The only concern with Jordyn is that it might not flow super well with the D starting last name as it’s quite a fast paced name. Jaelyn probably flows best of all three with the last name?
Otherwise, some similar names to honour her father (there might be other ways through his first name or other family):
Gia Jacinta
Gia Jocelyn
Gia Jasmine
Gia Jacqueline
Gia Kaelyn /Kaylyn/ Kailyn
Gia Raelynn
Gia Braelyn
Gia Gracelyn
Gia Evelyn
Gia Jazlyn
Gia Jaxon
Or else some other modern middle options:
Gia Joelle
Gia Noelle
Gia Kingsley
Gia Kinsley
Gia Tinsley
Gia Tindra (a fave of mine! 
)
Gia Ryker
Gia Piper
Gia Sloane
Gia Sutton
Gia Brinley
Gia Mara
Gia Cadence
Gia Serenity
Gia Constance
Gia Tansy
Am sure you’ll get some traditional name suggestions - eg Gia Charlotte - to try out too so will leave it here! Hope this helps. 
Edit: Gia Jaelyn crept up on me after posting - so if it’s the most meaningful, I would use it!
[name_f]Gia[/name_f] [name_u]Jaelyn[/name_u] has grown on me since yesterday tbh!
[name_f]Gia[/name_f] [name_f]Jasmine[/name_f] or [name_f]Gia[/name_f] [name_f]Jazlyn[/name_f] (the harder z sound sort of breaks up the G/J sounds)
[name_f]Gia[/name_f] [name_f]Felicity[/name_f]
[name_f]Gia[/name_f] [name_f]Linnea[/name_f]
[name_f]Gia[/name_f] [name_f]Avalyn[/name_f]
[name_f]Gia[/name_f] [name_f]Adelyn[/name_f]
[name_f]Gia[/name_f] [name_f]Leonie[/name_f]
[name_f]Gia[/name_f] [name_f]Phoebe[/name_f]
[name_f]Gia[/name_f] [name_u]Carmen[/name_u]
[name_f]Gia[/name_f] [name_f]Elowen[/name_f]
[name_f]Gia[/name_f] [name_u]Wren[/name_u]