Latvian President Raimonds Vējonis led the way with congratulations to his Estonian counterpart Toomas Hendrik Ilves and the people of Estonia, along with a picture of the Estonian flag flying outside his Riga office.
Prime Minister Māris Kučinskis followed suit, tweeting in English as well as Latvian.
Let me express my heartfelt congratulations to Estonian neighbours on the Independence Day! @EstonianGovt— Maris Kucinskis (@MarisKucinskis) February 24, 2016
Also chipping in was popular Latvian songster Lauris Reiniks, who enjoys a following north of the border too, with a cheeky reference to a myth popular in Estonia that Latvians possess six toes.
If you're in the mood to enjoy Estonia's traditional independence day parade on Wednesday afternoon, you can watch it live via our friends at ERR News, HERE.
As well as having a small number of soldiers taking part in the military parade, Latvia will get a more 'hands-on' role during independence day celebrations later in the evening when Estonia's new first lady, Latvian citizen Ieva Ilves, greets guests at the traditional independence day ball.
Proving she was getting into the swing of things bright and early, she even tweeted a "rare selfie" of attending an early-morning flag-raising ceremony at the iconic Pikk Hermann tower beside the Estonian parliament.