The Montag-Pratt clan certainly had a lot to celebrate this past weekend: Not only did Holly Montag swap vows with Richie Wilson, but her younger sis Heidi enjoyed an early birthday bash following the nuptials. And much like her former "Hills" self, Spencer Pratt's wifey, who turns 28 today, still enjoys cutting a rug -- especially on her big day.

In the Instagram videos below, the MTV alum is having a ball in her hometown of Crested Butte, Colorado, while holding a bottle of bubbly and grooving to a bunch of hits, including 50 Cent's "In Da Club" and Queen Bey's "Love On Top." Go shorty, it's your birthday...

Heids also received an outpouring of b-day love, including some from her sister-in-law Stephanie Pratt and a sweet throwback posted by Holly:

Happy birthday to my adorable sister-in-law @heidimontag! You are such a gift & blessing to our fam!! Love you best friend/seester xx

— Stephanie Pratt (@stephaniepratt) September 15, 2014

#Repost from halzbalz Happy birthday to the most beautiful sister inside and out! Love you sister!… http://t.co/uBp0Kyi2v1

— Heidi Montag (@heidimontag) September 15, 2014

In addition, Kristin Cavallari tweeted at her dear old pal and wanted to make sure that Spencer was treating her extra right. He, in turn, couldn't help but respond:

@KristinCav @heidimontag always!

— Spencer Pratt (@spencerpratt) September 15, 2014

Offer Heidi your b-day wishes in the comments below, and watch her 20th birthday festivities at Les Deux (RIP) with Lauren Conrad and the crew.