Gisele Wishes Tom Brady Happy 45th Birthday, Teammate Gets QB Custom

8:27 AM PT -- Gisele ain't the only one ready to celebrate TB12's birthday Wednesday ... his Buccaneers teammate, Leonard Fournette, got him a custom cake for the occasion too!!

Instagram/@thecakegirl

The Tampa Bay running back revealed he had a GOAT dessert delivered for Brady's 45th ... and it came out awesome -- even featuring a joking, "Happy 100th Birthday" sign.

No word if Brady will have a slice -- he doesn't eat sugar, after all -- but, hey, it's the thought that counts, right?!

Tom Brady turned 45 today ... and the star QB's wife, Gisele, made sure to shout out her man on his special day, reminding him he's loved as he celebrates another year of life!!

Gisele -- who's been married to Tom since 2009 -- took to Instagram to pen the romantic post to her 7x Super Bowl-winning hubby QB ... posting a photo of Brady in his Bucs uni with two of his three children.

"Happy birthday to one of the most focused, disciplined, and fashionable person I know! @tombrady" Gisele wrote on social media.

"You are so loved and we are always here cheering for you and wishing you all the most wonderful things in life! ❤️"

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