Mel B girl-on-girl action in sexy bikini [PHOTOS]: Spice Girls songstress parties on Sydney yacht with husband Stephen Belafonte, flaunts flirty girl power

Mel B (aka, Scary Spice) was recently living the good life out on a luxurious yacht in Sydney Harbor, Australia. Just check out the slew of amazing photos the Spice Girls songstress continues posting on Instagram, and prepare to get jealous.

officialmelb: "Yippeeee missin this already."

officialmelb: "Missin my friends and family in sydney already."

Mel B's hubby Stephen Belafonte was also onboard, partying and soaking up the sun:

officialmelb: "Thank you for the amazing weather yesterday sydney loved it clearly #photobomb love my baby @stephenthinks11 sexy Lexi." 

officialmelb: "Hello sydney."  

officialmelb: "Great boat day all day in sydney."

But apparently once the drinks started flowing, things got a little wild!

While donning a sexy bikini, the 38-year-old "Spice Up Your Life" beauty started to get down-and-dirty with some of her gal pals. Belafonte was there to witness everything, but obviously he didn't mind the frisky girl-on-girl action! Check out the sexy photos featured on TMZ.

Now that's girl power!